Controlling engine options from settings.toml

[ileben]

I would like to be able to control engine options from the settings file, so that i don't have to modify Run_Caster_Kaldi.bat to injected them via the -o commandline argument. Ideally this would act as a direct verbatim pass-through to the engine, so that if an engine developer adds a new option, it is immediately accessible via settings file after updating the engine package itself.

In particular, I imagine most users would like to modify vad_padding_end_ms for Kaldi to suit their preference (different users may prefer to speak at different speeds). This would be especially true for people migrating from DNS where this setting is available in the user interface. To this end, I think it would also be useful to add a page to documentation containing tips for migration and/or point out the commonly modified engine options on the Kaldi setup page.

[kendonB]

@ileben are you able to put in the exact command you use in Run_Caster_kaldi.bat?