Beta Feature and Device Testing Release

v3.1.0b1

Beta Features:
 - Custom App Launcher buttons trigger services or scripts #152

Beta Device Control Fixes:
- Updated device support for new Firesticks: Fire TV Stick 4K 2nd Gen
(2023) and Fire TV Stick 4K Max 2nd Gen (2023) #225
   - Both do not control via sendevent
   - Both are not aware of the active app

What's New:
 - Apple TV Support for BBC iPlayer #251
 - App launch button for Channel 4 #252
 - App launch button for IPTV Smarters Pro #249
 - App launch button for ITVX #250