⬆️ videojs upgrade

[AntoLC]

Purpose

Upgrade video.js to version 8.

Proposal

• [x] adapt TS to new version
• [x] upgrade related dependencies
• [ ] transcipt seems to not work
• [ ] tests all the plugins

Notes

The official videojs-http-source-selector is not compatible with the version 8, we found a fork of it that is compatible: https://github.com/FreeTubeApp/videojs-http-source-selector.git