Add find() function to scan for devices using advertisement filters

- Add noinspection statements to suppress Lint errors
- Add information about pythonnet binaries to requirements_dev.txt
- Add Python representation of Windows.Devices.Bluetooth.Advertisement
  classes for conversion.
- Scanning is done using BluetoothLEAdvertisementWatcher instead of
  to enable all of the Bluetooth LE Advertisement features (
  flags, services, manufacturer data, ...) which are required for
  filtering.
- TODO: Filtering as described in find().__doc__
  Filtering could also be done using BluetoothLEAdvertisementWatcher.AdvertisementFilter
  however that would complicate future cross-platform compatibility and
  made using Regex filters impossible.