Improvement: Add additional CLI options for video source

[rmusser01]

A user should be able to specify the source of the video file, not just a youtube URL.

A url passed as an argument should be validated to be within the 'supported' list of URLs, and a '--force' option made available for situations where yt-dlp is known to work but not explicitly support.

It should also be possbile to specify '--local', and have a local video or audio file, as well as all audio or video files within a specified folder '--folder', for transcription.

[rmusser01]

https://github.com/yt-dlp/yt-dlp/blob/master/supportedsites.md

[rmusser01]

Not going to reinvent the wheel. ytdl will perform its own checks.