[Feature Request]: Shortcut key for "Toggle Loop"

[shadycloud]

Guidelines

• I have searched the issue tracker for open and closed issues that are similar to the feature request I want to file, without success.
• I have searched the documentation for information that matches the description of the feature request I want to file, without success.
• This issue contains only one feature request.

Problem Description

Much like, [Feature Request]: Keyboard shortcut to toggle autoplay #4103,
At this moment a shortcut for the Toggle Loop button is not part of the media player.

Proposed Solution

A keyboard shortcut for the "Toggle Loop" video player button "R" or "r" (mnemonic for replay)

"L" or "l" for "Loop" wont work since it's already used...
https://docs.freetubeapp.io/usage/keyboard-shortcuts/

Alternatives Considered

NA

Issue Labels

display more information to user, ease of use improvement, improvement to existing feature, new keyboard shortcut, visual improvement

[shadycloud]

@Hector118, @fdarcey, @ubello64, @KSterner2, and I got this feature working yesterday on a machine but it was with version 0.19.0... Was going to put in a pull request this morning so we can be closer to having a shortcut for every player button, in turn closing #1587 However, Toggle Loop seems to be in a state of flux using fresh clone w/ Ubuntu 22.04, because I get the following error message. Was going to make a bug report, but the Toggle Loop feature is working on the latest github release I just tested.

case 'R':
case 'r':
  event.preventDefault()
  this.toggleVideoLoop()
  break

video.es.js:229 VIDEOJS: ERROR: TypeError: Cannot read properties of undefined (reading 'value')
    at VueComponent.toggleVideoLoop (ft-video-player.js:1450:1)
    at loopButton.handleClick (ft-video-player.js:1424:1)
    at ClickableComponent._this.handleClick_ (video.es.js:10585:1)
    at data.dispatcher (video.es.js:2312:1) ```

[shadycloud]

Closing for same reason as #4227 (comment)