make the model field to snake_case

[hokor]

Is your feature request related to a problem? Please describe. When the field name in *.proto file is PascalCase or camelCase I want the p2p can convert the field name to snake_case when generate python file.

Describe the solution you'd like Add some cli option or plugin , so I can given the output filed case.

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

Additional context Add any other context or screenshots about the feature request here.

[so1n]

@hokor Can you describe your needs more specifically? From what I understand, Protobuf's field naming rules are similar to Python. Also the MessageToDict function of google.protobuf.json_format provides a preserving_proto_field_name option, which converts the field name to lowerCamelCase in the transformation.