Added endpoint that can be used to synchronize time via MC protocol.
In order to have different sets of endpoints for different products, we need to separate endpoints from the desktop service.
This PR: * provides Bluetooth-Harness API messages definition [EGD-5944] * provides Bluetooth-Harness API messages implementation * provides Bluetooth-Harness API usage on harness side [EGD-5946] * provides Bluetooth-Harness tests [EGD-5947]
Added harness test for BT scan in order to be able to test regression