Video: Update to VidstackPlayer library

[stsrki]

Closes #4914
Closes #5479

Updated Video to use VidstackPlayer library. The Plyr library was archived in favor of the new library sampotts/plyr#2737

In this version, I have made it work as closely as before, and from my tests, it should not have any breaking changes.

[David-Moreira]

• I can't tell if changing the quality does anything
• Changing captions or speed does not seem to have any effect, I don't see any subtitles
• Sometimes when clicking changing video, nothing happens, page seems broken.

[stsrki]

• I can't tell if changing the quality does anything

This should not be changed, hence the DefaultQuality parameter name. I removed the change button.

• Changing captions or speed does not seem to have any effect, I don't see any subtitles

Yeah, this seems to not work with Plyr layout while it works with default layout. I might report the issue on their repo.

• Sometimes when clicking changing video, nothing happens, page seems broken.

For me it works. Cannot reproduce.

[stsrki]

The menu should work now.

[David-Moreira]

DEMO:

• Go To 20 seconds only works once. Maybe the CurrentTime needs to be bound?
• It would be nice if clicking change video would alternate between both videos
• Menu seems to work perfectly right now, but I still don't get any captions at all, even though the options are there? Is this intended?
• When you click stop, you can only scrub the video, you can no longer play/pause the video, the video just stays paused?

DOCS:

• Is a video missing here
  
• The Widevine DRM instantiation doesn't seem to play at all?
• The Multiple files example, displays 3 files being bound, but you can't really use the other files? Would it not be great to see it, being able to select any of the 3 files?

[stsrki]

I have fixed the problems you mentioned. Some other things were already behaving as before, so I will skip them to avoid postponing the release.

Proceeding with the merge 🤞