Add random Device ID generation
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The [spec](https://webbluetoothcg.github.io/web-bluetooth/#add-an-allowed-bluetooth-device) (2. step) defines that the device id can't be the public address, therefore we generate a random id.
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Extend WebBluetooth with included services
- [X] `./mach build -d` does not report any errors
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- [X] These changes do not require tests because there are no webbluetooth tests yet
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