Switch from Google Beacon Platform to BLEAM, all time background work

Bleam scanner is an inverted Bluetooth low energy (BLE) beacon communication protocol. In the inverted communication scheme beacon serves as a scanner, taking this role from a phone that in its turn is responsible for advertising. The main benefit of such a design approach is its ability to function extensively in the background, monitoring RSSI levels. See: https://github.com/Connax-Oy/Bleam-Scanner-2