Add Kiiroo gen 2.1 documentation

[blackspherefollower]

Looks like the Onyx 2.1,Titan 1.1, Pearl 2.1 and Cliona use a new set of UUIDs.

The UUIDs are the same for all 4: Service UUID: 00001900-0000-1000-8000-00805f9b34fb Whitelist characteristic UUID: 00001901-0000-1000-8000-00805f9b34fb Txcharacteristic UUID: 00001902-0000-1000-8000-00805f9b34fb Rx characteristic UUID: 00001903-0000-1000-8000-00805f9b34fb

The control scheme for the Cliona and Pearl 2.1 is [ 0x01, 0xXX ] on Tx (where XX is between 0 and 100 (0x64)).

The Onyx 2.1 and Titan 1.1 both use Launch style movement commands: Tx is [ 0x03 0x00 0xXX 0xYY ] where XX is speed 0-99 (0x63) and YY is position 0-99 (0x63). Note: The Onyx 2.1 will stall and need a reboot if driven too slow, so do not drop speed below 6.