Write AVPlayer tvOS bug reports

[defagos]

• Report info panel layout issues as a bug. Since Apple privides a native AVPlayerViewController content proposal mechanism letting several different items to be played, info panel updates must be possible. Not needed anymore since the tvOS 15 player redesign
• Report DVR streams sometimes incorrectly detected as pure livestreams on tvOS (AVPlayer sees a duration of 0).
• Scroll resets in info panel when playing a DVR stream, see tvOS info panel "smarter reload" #85. Not a problem with tvOS 15 anymore
• New tvOS 15 info panel buttons are not refreshed immediately when they are changed on the AVPlayerItem. Same for transport bar menu items (only refreshed after being closed and opened again).