* Add device_tracker.bluetooth_update service
Will immediately scan for Bluetooth devices outside of the interval timer. Allows for less frequent scanning, with scanning on demand via automation.
* remove excess whitespace per bot comments
* Refactored update_bluetooth to call new function update_bluetooth_once
* Change service name to bluetooth_tracker_update to reflect platform name
* Reformat for line length
* Linting fix, pydoc, first line should end with a period
* Fixed a method call, and removed some more unsused parameters