FixYTPlayer in Chrome with OffiDocs

DESCRIPTION

Fix the YouTube player to the top of the window.

Fix the YouTube player to the top of the window.
Click the pin button in the left top of the player to toggle between fixed and unfixed.

# Release Notes
- v1.0.5: Fix: #cinematics layering issue by changing fixed element from #player to #player-container-outer
- v1.0.4: Fix the z-index relationship between header, side menu and player.
- v1.0.3: Enable pin button on end-of-playback screen.
- v1.0.2: Fix bug that does not recognize the player Extensions could not run due to YouTube.
- v1.0.1: Minor fixes and refactoring.
- v1.0.0: published.

FixYTPlayer web extension integrated with the OffiDocs Chromium online