Add GeneXus customizations: new files from 5.2-GX

Cleanly add the 11 files GeneXus introduced on the 5.2-GX line that did
not exist in upstream:

- .config/dotnet-tools.json
- .editorconfig
- .github/workflows/build.yml
- GXOData.Client.nuspec
- GXOData.Client.sln
- src/GXOdata.Client.All/* (5 files — the meta-package project)
- src/Simple.OData.Client.Core/Expressions/ODataExpression.Filter.cs

This is the starting point of 6.0-GX. The 14 GeneXus-modified files and
4 GeneXus-touched files that no longer exist in upstream are NOT ported
here — they must be re-implemented logically against the refactored
upstream code. Reference 5.2-GX versions via:
  git show origin/5.2-GX:<path>

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: claudiamurialdo

.config/dotnet-tools.json

@@ -0,0 +1,12 @@
+{
+  "version": 1,
+  "isRoot": true,
+  "tools": {
+    "nugetkeyvaultsigntool": {
+      "version": "3.2.3",
+      "commands": [
+        "NuGetKeyVaultSignTool"
+      ]
+    }
+  }
+}

.editorconfig

@@ -1,223 +1,12 @@
-# Rules in this file were initially inferred by Visual Studio IntelliCode from the C:\Users\david\Projects\Simple.OData.Client codebase based on best match to current usage at 08/12/2021
-# You can modify the rules from these initially generated values to suit your own policies
-# You can learn more about editorconfig here: https://docs.microsoft.com/en-us/visualstudio/ide/editorconfig-code-style-settings-reference
-[*.cs]
-
+root = true
 
-#Core editorconfig formatting - indentation
-
-#use soft tabs (spaces) for indentation
+[*]
+charset = utf-8
 indent_style = space
 
-#Formatting - indentation options
-
-#indent switch case contents.
-csharp_indent_case_contents = true
-#indent switch labels
-csharp_indent_switch_labels = true
-
-#Formatting - new line options
-
-#place catch statements on a new line
-csharp_new_line_before_catch = true
-#place else statements on a new line
-csharp_new_line_before_else = true
-#require members of anonymous types to be on separate lines
-csharp_new_line_before_members_in_anonymous_types = true
-#require members of object initializers to be on the same line
-csharp_new_line_before_members_in_object_initializers = false
-#require braces to be on a new line for methods, accessors, object_collection_array_initializers, control_blocks, properties, lambdas, anonymous_types, and types (also known as "Allman" style)
-csharp_new_line_before_open_brace = methods, accessors, object_collection_array_initializers, control_blocks, properties, lambdas, anonymous_types, types
-
-#Formatting - organize using options
-
-#sort System.* using directives alphabetically, and place them before other usings
-dotnet_sort_system_directives_first = true
-
-#Formatting - spacing options
-
-#require NO space between a cast and the value
-csharp_space_after_cast = false
-#require a space before the colon for bases or interfaces in a type declaration
-csharp_space_after_colon_in_inheritance_clause = true
-#require a space after a keyword in a control flow statement such as a for loop
-csharp_space_after_keywords_in_control_flow_statements = true
-#require a space before the colon for bases or interfaces in a type declaration
-csharp_space_before_colon_in_inheritance_clause = true
-#remove space within empty argument list parentheses
-csharp_space_between_method_call_empty_parameter_list_parentheses = false
-#remove space between method call name and opening parenthesis
-csharp_space_between_method_call_name_and_opening_parenthesis = false
-#do not place space characters after the opening parenthesis and before the closing parenthesis of a method call
-csharp_space_between_method_call_parameter_list_parentheses = false
-#remove space within empty parameter list parentheses for a method declaration
-csharp_space_between_method_declaration_empty_parameter_list_parentheses = false
-#place a space character after the opening parenthesis and before the closing parenthesis of a method declaration parameter list.
-csharp_space_between_method_declaration_parameter_list_parentheses = false
-
-#Formatting - wrapping options
-
-#leave code block on single line
-csharp_preserve_single_line_blocks = true
-#leave statements and member declarations on the same line
-csharp_preserve_single_line_statements = true
-
-#Style - Code block preferences
-
-#prefer no curly braces if allowed
-csharp_prefer_braces = true:suggestion
-
-#Style - expression bodied member options
-
-#prefer block bodies for accessors
-csharp_style_expression_bodied_accessors = when_on_single_line:suggestion
-#prefer block bodies for constructors
-csharp_style_expression_bodied_constructors = false:suggestion
-#prefer block bodies for methods
-csharp_style_expression_bodied_methods = false:suggestion
-#prefer expression-bodied members for properties
-csharp_style_expression_bodied_properties = true:suggestion
-
-#Style - expression level options
-
-#prefer out variables to be declared inline in the argument list of a method call when possible
-csharp_style_inlined_variable_declaration = true:suggestion
-#prefer ItemX properties to tuple names
-dotnet_style_explicit_tuple_names = false:suggestion
-#prefer the language keyword for member access expressions, instead of the type name, for types that have a keyword to represent them
-dotnet_style_predefined_type_for_member_access = true:suggestion
-
-#Style - Expression-level  preferences
-
-#prefer default(T) over default
-csharp_prefer_simple_default_expression = false:suggestion
-#prefer objects to be initialized using object initializers when possible
-dotnet_style_object_initializer = true:suggestion
-#prefer inferred anonymous type member names
-dotnet_style_prefer_inferred_anonymous_type_member_names = false:suggestion
-#prefer inferred tuple element names
-dotnet_style_prefer_inferred_tuple_names = true:suggestion
-
-#Style - implicit and explicit types
-
-#prefer var over explicit type in all cases, unless overridden by another code style rule
-csharp_style_var_elsewhere = true:suggestion
-#prefer var is used to declare variables with built-in system types such as int
-csharp_style_var_for_built_in_types = true:suggestion
-#prefer var when the type is already mentioned on the right-hand side of a declaration expression
-csharp_style_var_when_type_is_apparent = true:suggestion
-
-#Style - language keyword and framework type options
-
-#prefer the language keyword for local variables, method parameters, and class members, instead of the type name, for types that have a keyword to represent them
-dotnet_style_predefined_type_for_locals_parameters_members = true:suggestion
-
-#Style - Miscellaneous preferences
-
-#prefer anonymous functions over local functions
-csharp_style_pattern_local_over_anonymous_function = false:suggestion
-
-#Style - modifier options
-
-#prefer accessibility modifiers to be declared except for public interface members. This will currently not differ from always and will act as future proofing for if C# adds default interface methods.
-dotnet_style_require_accessibility_modifiers = for_non_interface_members:suggestion
-
-#Style - Modifier preferences
-
-#when this rule is set to a list of modifiers, prefer the specified ordering.
-csharp_preferred_modifier_order = public,private,internal,protected,async,static,override,readonly,abstract:suggestion
-
-#Style - Pattern matching
-
-#prefer pattern matching instead of is expression with type casts
-csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
-
-#Style - qualification options
-
-#prefer fields not to be prefaced with this. or Me. in Visual Basic
-dotnet_style_qualification_for_field = false:suggestion
-#prefer methods not to be prefaced with this. or Me. in Visual Basic
-dotnet_style_qualification_for_method = false:suggestion
-#prefer properties not to be prefaced with this. or Me. in Visual Basic
-dotnet_style_qualification_for_property = false:suggestion
-csharp_style_namespace_declarations= file_scoped:silent
-csharp_indent_labels = one_less_than_current
-csharp_using_directive_placement = outside_namespace:silent
-csharp_prefer_simple_using_statement = true:suggestion
-csharp_style_prefer_method_group_conversion = true:silent
-csharp_style_prefer_top_level_statements = true:silent
-csharp_style_expression_bodied_operators = false:silent
-csharp_style_expression_bodied_indexers = true:silent
-csharp_style_expression_bodied_lambdas = true:silent
-csharp_style_expression_bodied_local_functions = false:silent
-csharp_style_throw_expression = true:suggestion
-csharp_style_prefer_null_check_over_type_check = true:suggestion
-
-[*.{cs,vb}]
-indent_style=tab
-[*.{cs,vb}]
-#### Naming styles ####
-
-# Naming rules
-
-dotnet_naming_rule.interface_should_be_begins_with_i.severity = suggestion
-dotnet_naming_rule.interface_should_be_begins_with_i.symbols = interface
-dotnet_naming_rule.interface_should_be_begins_with_i.style = begins_with_i
-
-dotnet_naming_rule.types_should_be_pascal_case.severity = suggestion
-dotnet_naming_rule.types_should_be_pascal_case.symbols = types
-dotnet_naming_rule.types_should_be_pascal_case.style = pascal_case
-
-dotnet_naming_rule.non_field_members_should_be_pascal_case.severity = suggestion
-dotnet_naming_rule.non_field_members_should_be_pascal_case.symbols = non_field_members
-dotnet_naming_rule.non_field_members_should_be_pascal_case.style = pascal_case
-
-# Symbol specifications
-
-dotnet_naming_symbols.interface.applicable_kinds = interface
-dotnet_naming_symbols.interface.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
-dotnet_naming_symbols.interface.required_modifiers = 
-
-dotnet_naming_symbols.types.applicable_kinds = class, struct, interface, enum
-dotnet_naming_symbols.types.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
-dotnet_naming_symbols.types.required_modifiers = 
-
-dotnet_naming_symbols.non_field_members.applicable_kinds = property, event, method
-dotnet_naming_symbols.non_field_members.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
-dotnet_naming_symbols.non_field_members.required_modifiers = 
-
-# Naming styles
-
-dotnet_naming_style.begins_with_i.required_prefix = I
-dotnet_naming_style.begins_with_i.required_suffix = 
-dotnet_naming_style.begins_with_i.word_separator = 
-dotnet_naming_style.begins_with_i.capitalization = pascal_case
-
-dotnet_naming_style.pascal_case.required_prefix = 
-dotnet_naming_style.pascal_case.required_suffix = 
-dotnet_naming_style.pascal_case.word_separator = 
-dotnet_naming_style.pascal_case.capitalization = pascal_case
-
-dotnet_naming_style.pascal_case.required_prefix = 
-dotnet_naming_style.pascal_case.required_suffix = 
-dotnet_naming_style.pascal_case.word_separator = 
-dotnet_naming_style.pascal_case.capitalization = pascal_case
-dotnet_style_operator_placement_when_wrapping = beginning_of_line
+[*.cs]
 tab_width = 4
-indent_size = 4
-end_of_line = crlf
-dotnet_style_coalesce_expression = true:suggestion
-dotnet_style_null_propagation = true:suggestion
-dotnet_style_prefer_is_null_check_over_reference_equality_method = true:suggestion
-dotnet_style_prefer_auto_properties = true:suggestion
-dotnet_style_object_initializer = true:suggestion
-dotnet_style_collection_initializer = true:suggestion
-dotnet_style_prefer_simplified_boolean_expressions = true:suggestion
-dotnet_style_prefer_conditional_expression_over_assignment = true:silent
-dotnet_style_prefer_conditional_expression_over_return = true:silent
-dotnet_style_explicit_tuple_names = false:suggestion
-dotnet_style_prefer_inferred_tuple_names = true:suggestion
-dotnet_style_prefer_inferred_anonymous_type_member_names = false:suggestion
-dotnet_style_prefer_compound_assignment = true:suggestion
-dotnet_style_prefer_simplified_interpolation = true:suggestion
-dotnet_style_namespace_match_folder = true:suggestion
+trim_trailing_whitespace = true
+csharp_new_line_before_open_brace = all
+csharp_preserve_single_line_statements = true
+dotnet_sort_system_directives_first = true