Add button to pause playlist after current video (FreeTubeApp#3938)

Rounded playlist buttons to circles
Add pause button for playlists

static/locales/en-US.yaml

@@ -628,6 +628,7 @@ Video:
   Reverse Playlist: Reverse Playlist
   Play Next Video: Play Next Video
   Play Previous Video: Play Previous Video
+  Pause on Current Video: Pause on Current Video
   # Context is "X People Watching"
   Watching: Watching
   Watched: Watched
@@ -903,6 +904,8 @@ Shuffle is now enabled: Shuffle is now enabled
 The playlist has been reversed: The playlist has been reversed
 Playing Next Video: Playing Next Video
 Playing Previous Video: Playing Previous Video
+Playlist will not pause when current video is finished: Playlist will not pause when current video is finished
+Playlist will pause when current video is finished: Playlist will pause when current video is finished
 Playing Next Video Interval: Playing next video in no time. Click to cancel. | Playing next video in {nextVideoInterval} second. Click to cancel. | Playing next video in {nextVideoInterval} seconds. Click to cancel.
 Canceled next video autoplay: Canceled next video autoplay