Allow local or remote ASR process

[chainyo]

This PR introduces many things to allow LocalExecution or RemoteExecution for transcription and diarization.

The RemoteExecution isn't functional yet and will raise a NotImplementedError.

• Added 2 new ASR_TYPE for custom deploy only_transcription and only_diarization. They still need to be fully implemented, but they are present.
• Added TRANSCRIBE_SERVER_URLS as a new env variable to list the URLs available for RemoteExecution for the transcription task.
• Added DIARIZE_SERVER_URLS as a new env variable to list the URLs available for RemoteExecution for the diarization task.
• Multiple updates to the Settings schema.
• Updated the lifespan with the two new asr_type and the async asr_type process.
• Added DiarizeResponse and TranscribeResponse for only transcription and diarization endpoints.
• Added a custom torch.Tensor pydantic annotation.
• Updated the endpoints with the new ProcessException schema that handles the source and the message of Python exceptions.
• Added the two next only_transcription and only_diarization endpoints.
• Added a lot of schemas for the ASRService to handle process tasks, execution types, etc.
• Removed unused parameters for the base ASRService class.
• Added a new URLService to handle concurrency for the new RemoteExecution.
• Removed unused vad_service parameter for the transcribe_service.
• Updated tests.