feat: Add support for custom types in function parameters

[Cheyenne1025]

• Update GetFunctionDefinition method to handle custom types as function parameters
• Recursively process properties of custom types
• Generate object type property definitions for custom types
• Add GetPropertyDefinition method to create property definitions based on property type
• Update CallFunction method to handle custom type parameters
• Add tests for custom type support
• VerifyGetFunctionDefinition_CustomType test to verify function definition generation for custom types
• VerifyCallFunction_CustomType test to verify function calling with custom type parameters
• Add tests for complex custom types
• VerifyGetFunctionDefinition_ComplexCustomType test to verify function definition generation for complex custom types with nested custom types
• VerifyCallFunction_ComplexCustomType test to verify function calling with complex custom type parameters
• Add CustomType and ComplexCustomType classes for testing purposes

[Removable]

It seems we have to set the dev branch as the target of our PR.

[kayhantolga]

The unit test you wrote is failing. Could you please fix it?

[kayhantolga]

The code is unable to handle self-referenced objects. Please test with the following complex object:

public class ABC
{
   public string A { get; set; }
   public ABC b { get; set; }
}