Added Tab5 Keyboard support for my portable emulators for Commodore

Tab5 Keyboard is a convenience add-on I added native keyboard support to my emulators already running on M5Stack's Tab5. There were already 64/Vic-20/128 original keyboards , CardKB , web page adapter , Palm Portable Keyboard , and custom BLE support . Now there is also attached keyboard accessory support. The Tab5 is a 5" ESP32-P4 handheld tablet with high resolution 1280x720 LCD. The keyboard…