Additional languages support

[dmarvp]

Hi @Fleker @proppy, I was wondering if there are any plans for additional languages to be supported by the python SDK. I tried nl-NL the other day trying to talk with a google action from the Netherlands and I got this error:

<_MultiThreadedRendezvous of RPC that terminated with:\n\tstatus = StatusCode.INVALID_ARGUMENT\n\tdetails = "Invalid 'dialog_state_in': unsupported language_code."\n\tdebug_error_string = "{"created":"@1639689725.583797666","description":"Error received from peer ipv4:64.233.170.95:443","file":"src/core/lib/surface/call.cc","file_line":1062,"grpc_message":"Invalid 'dialog_state_in': unsupported language_code.","grpc_status":3}"\n>

I understand this is the current list of supported languages, but I also understand that there are more supported languages by Google Assistant itself as explained here like Hindi, Norwegian, Dutch, Korean etc. Are there any plans to bring these into the SDK?