[Feature request] Looping media support

[KirbysDarkNebula]

Have some option for imported media to restart its playback (indefinitely?) beyond its original ending, as determined by Right click on clip -> Edit duration -> Max frame, maybe adding a loop option that's disabled by default to keep current behaviour.
This would be useful for compositing, as you could make an animation and have it in the background looping for the entirety of the video, instead of manually animating it for the duration of the video.

Allowing some way to loop keyframe animations would be another way to accomplish this, but that's outside the scope of this request.

Btw great work on the editor! Tried it ~6 months ago and it has become so much more easy to navigate and less prone to crashing in that time, hoping it keeps progressing smoothly!