[REQ] Option to explode lists of query parameters

[dylanpleno]

Is your feature request related to a problem? Please describe.

I have an API (made with FastAPI) that expects lists passed as queries to be exploded, (e.g. ?field=str1&field=str2). I have seen in the source that this is an option, but I can't find a simple way to do this via the command line interface.

Describe the solution you'd like

An option (either a config file or passed through -p) to set explode=true.

Describe alternatives you've considered

Extending the DefaultCodeGen and making my own version or writing a script to edit the generated code after it is created.

Additional context