Improve GitHub Actions (#97)

* Delete hassfest.yaml

* Update and rename ci.yaml to tox.yaml

* Create combined.yaml

* Update hacs.json

* Update README.md

* Update combined.yaml

* Remove unused import

* Restored wrongly deleted line in cover.py

* Update config_flow.py

* Update __init__.py

Co-authored-by: Pierre Ståhl <pierre.staahl@gmail.com>
Co-authored-by: rospogrigio <49229287+rospogrigio@users.noreply.github.com>

custom_components/localtuya/pytuya/__init__.py

@@ -37,15 +37,15 @@ Credits
 
 import asyncio
 import base64
-from hashlib import md5
+import binascii
 import json
 import logging
-import time
-import binascii
 import struct
+import time
 import weakref
-from collections import namedtuple
 from abc import ABC, abstractmethod
+from collections import namedtuple
+from hashlib import md5
 
 from cryptography.hazmat.backends import default_backend
 from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes