[nuki] Opener support and discovery

[janvyb]

Nuki binding is missing lots of features provided by bridge API, aim of this enhancement is to add them, namely:

• Support for Nuki Opener, exposing all API attributes as channels
• Add new channels to Nuki Smartlock (battery level, keypad battery level, charging status)
• Support for automatic bridge discovery using Nuki Web API
• Support for automatic Smartlock and Opener discovery using Bridge API
• Better callback handling - do not remove callback of other openhab instances, remove callback when binding shuts down
• Secure bridge authentication using hashed token instead of sending token in plain text to prevent replay attacks/sniffing of token
• Generate bridge/device Thing ids from ids provided by Nuki API, so that when devices are removed and added again, all channel links are preserved

[openhab-bot]

This issue has been mentioned on openHAB Community. There might be relevant details there:

https://community.openhab.org/t/new-openhab2-binding-for-nuki-smart-locks/25940/145