[EDGE] Ring Retrofit Kit 8-channel contact sensor driver

[JDRoberts]

@sanme

I have not been using this long enough to see if the device reports granular battery percentage (or if it only gives 100, 99, and then 0). Will update the post once I have confirmed that.

Nice work.

Most battery powered Z wave devices report in tiers, not individual levels. This is done to save battery life since it means fewer reports are required.

FAQ: How Sleepy Devices Report Battery Life (tier reporting)