YouTube Embed & Shorts EX troch Cultured6967

This will add or modify few things in YouTube Embed and Shorts.

In YouTube Embed it adds:
1. A dark theme.
2. Keyboard shortcuts to change volume.
3. Double click to toggle full screen.
4. 5s seek.
5. Hide UI when paused.
6. Menu at top right.
7. Number keys to Jump (1 is go to 10%, 9 is got to 90%).
8. Playback speed shortcut like in standard YouTube.
9. Volume scroll to change volume using mouse scroll wheel.
10. Close Stats for Nerds by pressing the X icon.
11. Move frame by frame using the same shortcut button as standard YouTube.

In YouTube Shorts it adds:
1. Keyboard shortcuts to seek.
2. Keyboard shortcuts to change volume.
3. Keep CC and Full Screen icon in view when the window is too small.
4. Full Windowed mode which is like Full Screen but only expand to the current window.
5. Double Click to toggle full screen.
6. Move frame by frame using the same shortcut button as standard YouTube.

Misc:
1. The ability to pop out live chat chat without leaving an empty space.
2. Thumbnail will fit to the video window instead of being cropped.
3. Now you can double click to exit full screen when the video ended on standard YouTube.