NO-ISSUE Add types for sig/line/bot/v2/*.rb

Author: Yang-33

sig/line/bot/v2/reserved_words.rbs

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+module Line
+  module Bot
+    module V2
+      RESERVED_WORDS: Array[Symbol]
+    end
+  end
+end

sig/line/bot/v2/utils.rbs

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+module Line
+  module Bot
+    module V2
+      module Utils
+        def self.deep_underscore: (Hash[untyped, untyped]) -> Hash[Symbol, untyped]
+
+        def self.deep_symbolize: (untyped) -> untyped
+
+        def self.deep_to_hash: (untyped) -> untyped
+
+        def self.deep_camelize: (untyped) -> untyped
+
+        def self.deep_compact: (untyped) -> untyped
+
+        def self.deep_convert_reserved_words: (untyped) -> untyped
+
+        def self.hash_to_struct: (Hash[untyped, untyped]) -> ::Struct[untyped]
+
+        def self.camelize: (String | Symbol) -> String
+      end
+    end
+  end
+end

sig/line/bot/v2/version.rbs

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+module Line
+  module Bot
+    module V2
+      VERSION: String
+    end
+  end
+end