homebridge-xiaomi-devices v1.2.0

Based on @viestursr/homebridge-xiaomi-yeelight and @aholstenson/miio. Number of dependencies is reduced and support for another devices is added based on information got from @rytilahti/python-miio.

Currently supported and tested devices:

• Mi Smart LED Ceiling Light
• Yeelight Staria Bedside Lamp
• Yeelight Light Strip Plus
• Mi Robot Vacuum Mop Essential
• Air Purifier 2H.

Support for night mode of all devices is added via the Night Mode Switch.