deCONZ config entry (#13402)

* Try config entries

* Testing

* Working flow

* Config entry text strings

* Removed manual inputs for config flow

* Support unloading of config entry

* Bump requirement to v33

* Fix comments from test

* Make sure that only one deCONZ instance can be set up

* Hass doesn't support unloading platforms yet

* Modify get_api_key to be testable

* Fix hound comments

* Add test dependency

* Add test for no key

* Bump requirement to v35
Add pydeconz to list of test components

* Don't have a check in async_setup that domain exists in hass.data

script/gen_requirements_all.py

@@ -67,6 +67,7 @@ TEST_REQUIREMENTS = (
     'prometheus_client',
     'pushbullet.py',
     'py-canary',
+    'pydeconz',
     'pydispatcher',
     'PyJWT',
     'pylitejet',