* Add mysensors device_tracker platform
* Add discovery of device_tracker platforms
* Enable discovery of device_tracker platforms that are not
DeviceScanner.
* Update signature of setup_scanner function in all affected platforms.
* Add test.
* Use discovery for mysensors device_tracker platform.
* Remove gps accuracy
* Small change to core like schema
* fix depency
* Move HTTP to own folder
* Break HTTP into middlewares
* Lint
* Split tests per middleware
* Clean up HTTP tests
* Make HomeAssistantViews more stateless
* Lint
* Make HTTP setup async