[ble] Add support to clear all current bondings

kmk/keys.py

@@ -641,6 +641,7 @@ make_key(names=('LED_ANI',), on_press=handlers.led_ani)
 make_key(names=('LED_AND',), on_press=handlers.led_and)
 make_key(names=('LED_MODE_PLAIN', 'LED_M_P'), on_press=handlers.led_mode_static)
 make_key(names=('LED_MODE_BREATHE', 'LED_M_B'), on_press=handlers.led_mode_breathe)
+make_key(names=('BT_CLEAR_BONDS', 'BT_CLR'), on_press=handlers.bt_clear_bonds)
 
 
 make_key(