Add Video support

[shivdbz2010]

Add wan video support - mp4 and webm

[RupertAvery]

Please provide sample videos that contain metadata by attaching here. No NSFW please.

[shivdbz2010]

https://image.civitai.com/xG1nkqKTMzGDvpLrqFT7WA/1165c357-f235-42df-8d7e-db7c17f2c132/transcode=true,original=true,quality=90/99181164.webm

https://image.civitai.com/xG1nkqKTMzGDvpLrqFT7WA/a4093984-9a08-434f-b348-c8148f4961cf/transcode=true,original=true,quality=90/99359746.webm
https://civitai.com/images/99359746

https://image.civitai.com/xG1nkqKTMzGDvpLrqFT7WA/d41e3c98-044c-4e3b-9581-07d557a9b52e/transcode=true,original=true,quality=90/99666182.webm
https://civitai.com/images/99666182

[RupertAvery]

Sorry, but those links do not have the prompt metadata.

[ooofest]

Related issue:
#201

Video samples attached in two bundles

vid_metadata_samples02.zip
vid_metadata_samples01.zip

• the video files and their same-named PNGs should have equivalent metadata.

[RupertAvery]

Video support has been added in the latest commits. A proper release will be coming soon, but if anyone wants to check it out

https://github.com/RupertAvery/DiffusionToolkit/actions/runs/20687187011/artifacts/5016024719