[C#, Python] Fix C# duplicate path variable, add python module geneartion

[yhyu13]

1, Fix C# duplicate path variable Make path variable ending with abbreviation just like c++ to avoid duplicate variable name

2, Add python module generation Following the python naming convention, generate python module (just a data class) that can be imported and used by imgui python bindings

3, All files are re-generated and updated by a run of the generate python script today.