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>

.github/workflows/combined.yaml

@@ -0,0 +1,26 @@
+name: "Validation And Formatting"
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 0 * * *'
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        name: Download repo
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-python@v2
+        name: Setup Python
+      - uses: actions/cache@v2
+        name: Cache
+        with:
+          path: |
+            ~/.cache/pip
+          key: custom-component-ci
+      - uses: KTibow/ha-blueprint@stable
+        name: CI
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/hassfest.yaml

@@ -1,14 +0,0 @@
-name: Validate with hassfest
-
-on:
-  push:
-  pull_request:
-  schedule:
-    - cron: "0 0 * * *"
-
-jobs:
-  validate:
-    runs-on: "ubuntu-latest"
-    steps:
-      - uses: "actions/checkout@v2"
-      - uses: home-assistant/actions/hassfest@master

.github/workflows/tox.yaml

@@ -1,4 +1,4 @@
-name: CI
+name: Tox PR CI
 
 on: [pull_request]
 
@@ -11,7 +11,6 @@ jobs:
     runs-on: ${{ matrix.platform }}
     strategy:
       matrix:
-        # https://help.github.com/articles/virtual-environments-for-github-actions
         platform:
           - ubuntu-latest
         python-version: