FR: Bluetooth support

[dknowles2]

Encode lock support communication over BLE. It would be nice to have a transport that didn't require communication with the Schlage cloud servers.

[dknowles2]

Current notes:

• Data encoding seems to use https://en.wikipedia.org/wiki/CBOR
• Requests are signed with an SHA256 HMAC

[robertkearns]

@dknowles2 I stumbled on this library via home assistant, awesome work!

I have also been thinking about trying to bypass the Schlage servers, which I am hoping would greatly improve lag. Initially, I thought this would only be doable by running a man in the middle to mimic the server. I am doubtful this would work however, as there are a few ways they could defeat it (ssl pinning, etc.). I am also not sure how the underlying network flow works between the locks and server.

Would love to help with this feature if you are looking for outside contributions.