Deebotozmo

Changelog:
- Fix MQTT url for China (And3rsL/Deebot-for-Home-Assistant154)

Changelog:
- fix vacuum state is unknown at start (And3rsL/Deebot-for-Home-Assistant160)

Changelog:

- fix vacuum unknown at start

Changelog:
- fix handling correctly position events

Huge release with a lot of refactoring, sync and MQTT

:warning: **In this release a lot of refactoring was done, unfortunately it was not possible to do it without breaking changes.**

Changelog:
- A lot of refactoring and renaming
- Using asyncio / async
- Add the possibility to subscribe to MQTT, so the vacuum pushes the changes to us. No more polling needed
- Removed cli (console/terminal) support
- Removed unused dependencies
... and a lot more... Please give a look at 37

This is a beta release, which can have still some bugs. Please feel free to test it and give us feedback :)
For the changes see 37

**Changes from the last beta:**
- Fix set correctly available and state
- Improve error logging