Fixes bug of missing overload API for XSimpleList<T> for default values for sequences of elements of simple types (#86)

* attribute list type examples.

* updated list examples.

* API additional change: added overload for default values for xtypedlist<t>.

* Split attributes examples into 2 files.

* Added element list, with default, examples. Generated code.

* trying to find provenance of this non-deterministic error that sometimes happens during test runs...

* added test for ListTypeWithDefaults.xsd

* updated version and release notes.

* Update XObjectsCore/API/XList.cs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update XObjectsCore/API/XSimpleList.cs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update XObjectsCore/API/XSimpleList.cs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* wrong list syntax, it's spaces not commas.

* Updated attr tests.

* Turned off qualified namespace elements.

* the static property for holding default values is now internal instead of private.

* Added tests for default values for sequenecs of simple element types.

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: mamift

LinqToXsd.Schemas/XsdFeatureTests/Attributes/ListType.xsd

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="urn:LinqToXsdCore:ListType"
+  xmlns="urn:LinqToXsdCore:ListType">
+
+  <xs:element name="person">
+    <xs:complexType>
+      <xs:attribute name="otherNames">
+        <xs:simpleType>
+          <xs:list itemType="xs:string"/>
+        </xs:simpleType>
+      </xs:attribute>
+      <xs:attribute name="surname" type="xs:string"/>
+      <xs:attribute name="milestoneYears">
+        <xs:simpleType>
+          <xs:list itemType="xs:int"/>
+        </xs:simpleType>
+      </xs:attribute>
+    </xs:complexType>
+  </xs:element>
+  <xs:element name="persons">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element maxOccurs="unbounded" minOccurs="0" ref="person"/>
+      </xs:sequence>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>