add workflows

.github/workflows/hassfest.yaml

@@ -0,0 +1,16 @@
+name: Validate with hassfest
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+  schedule:
+    - cron:  '0 6 * * 6'  
+
+jobs:
+  validate-hassfest:
+    runs-on: "ubuntu-latest"
+    steps:
+        - uses: "actions/checkout@v4"
+        - name: HA validation
+          uses: "home-assistant/actions/hassfest@master"

.github/workflows/stale.yaml

@@ -0,0 +1,22 @@
+name: 'Close stale issues and PR'
+on:
+  schedule:
+    - cron: '01 2 * * *'
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write    
+    steps:
+      - uses: actions/stale@v9
+        with:
+          stale-issue-message: 'This issue is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 8 days.'
+          stale-pr-message: 'This PR is stale because it has been open 45 days with no activity.'
+          close-issue-message: 'This issue was closed because it has been stalled for 15 days with no activity.'
+          exempt-issue-labels: 'bug'
+          exempt-all-assignees: true
+          days-before-stale: 45
+          days-before-close: 15
+          days-before-pr-close: -1

.github/workflows/validate.yaml

@@ -0,0 +1,19 @@
+name: Validate with HACS
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+  schedule:
+    - cron:  '0 5 * * 6'  
+
+jobs:
+  validate-hacs:
+    runs-on: "ubuntu-latest"
+    steps:
+        - uses: "actions/checkout@v4"
+        - name: HACS validation
+          uses: "hacs/action@main"
+          with:
+            category: "integration"
+