Hey, I implemented playback speed controls when in fullscreen (with some help from Claude) (ref. issue: InfinityLoop1308/PipePipe#825)

• When enabled, swiping up or down in the middle of the screen controls the playback speed
• To avoid issues w/ swiping to enter/exit fullscreen, the "Swipe to control playback speed" disables the "Fullscreen gesture control" option and vice-versa
• When "Fullscreen gesture control" was off, there was a flicker when swiping on non-fullscreen video. The change on BasePlayerGestureListener.kt ensures that the flicker won't happen.
• I arbitrarily set a min speed of 0.1 and a max of 4

If you require any changes at all let me know :)

EDIT: Forgot to include, but I did test the change on my own device