Speech to Text support audio/media file

[jingliancui]

Toolkit already support speech to text on listening source:
https://learn.microsoft.com/en-us/dotnet/communitytoolkit/maui/essentials/speech-to-text?tabs=ios

But could you also support the file source?
That's make value on the subtitles for the media source.

Due to I did lots of search on this one, especially on ios platform, it provide the speech kit, but need to handle the audio data complicatedly.

And this .net runtime package only support on windows platform:
https://learn.microsoft.com/en-us/dotnet/api/system.speech.recognition?view=net-9.0-pp