* Add new device tracker for Huawei Routers.
This was tested with the HG8247H model, used by Vodafone
Portugal for the Fiber service.
* add to .coveragerc; remove import and space
* add comments and fix lint
* rename methods
* huawei_router: add constants to scanner class
* huawei_router: remove lock; use format() in string
* huawei_router: use tupple instead of member only class
* huawei_router: reduce min scan time
* huawei_router: lint
* huawei_router: lint
* huawei_router: add missing lines in imports
* huawei_router: correctly decode string after router firmware update
* Remove things that is done on core now
