Video support

[pelikhan]

I've started looking into streamlining working with videos.

• added video recording in the playwright wrapper (already supported)! (v1.89.0)
• since most model do not support native video, planning on providing helpers to extract frames
• probably have a whisper transcription api as well to help with frame extraction

[pelikhan]

transcription added; currently requires OpenAI compatible server.

[pelikhan]

video frame extraction and sound extraction now added (requires ffmpeg)

[pelikhan]

#997