Add debug messages for case NRF_BONDSTATUSEVENT in debugEvent().
Handle Bonding/Bonded as connectionStatus.

- Add Bonding and Bonded to enum nRFConnectionStatus.
- Set connectionStatus = Bonded in case NRF_BONDSTATUSEVENT in transmitReceive().
- Set connectionStatus = Bonding in bond().

When bonding, connectionStatus was still Disconnected after an incoming connection had occurred.
This commit allows for the check if(nrf->getConnectionStatus() == Disconnected) in loop() with
bond() as well as with connect().
Swap RESET_PIN logic in constructor.

This is for the Arduino Uno only, which has its RESET_RF pin set to
LOW by default, and triggers the reset on HIGH!