Create hassfest.yml

.github/workflows/hassfest.yml

@@ -0,0 +1,18 @@
+name: Test hassfest
+
+on:
+  pull_request:
+    branches: ["main"]
+  push:
+    branches: ["main"]
+
+jobs:
+  hassfest:
+    runs-on: ubuntu-latest
+    name: hassfest
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v2
+      
+      - name: Test hassfest
+        uses: ./hassfest