Add Support for Eufy Smart Locks

Before starting with Hostaway, we purchased and set up Eufy smart locks on our property. They are a reasonably popular brand with good reviews (they've worked great for us so far). We liked them because they supported fingerprint access and could be unlocked with a physical key, if needed. They aren't supported by Hostaway yet but we'd be very grateful if they were added.

Here's a link to the current models Eufy sells:
https://www.eufy.com/collections/smart-lock