Add workflow to sync device classes with HA dev (#4629)

.github/workflows/sync-device-classes.yml

@@ -0,0 +1,60 @@
+---
+name: Synchronise Device Classes from Home Assistant
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '45 6 * * *'
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  sync:
+    name: Sync Device Classes
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Checkout Home Assistant
+        uses: actions/checkout@v3
+        with:
+          repository: home-assistant/core
+          path: home-assistant
+
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.11
+
+      - name: Install Home Assistant
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e home-assistant
+
+      - name: Sync
+        run: |
+          python ./script/sync-device_class.py
+
+      - name: Get PR template
+        id: pr-template-body
+        run: |
+          body=$(cat .github/PULL_REQUEST_TEMPLATE.md)
+          delimiter="$(openssl rand -hex 8)"
+          echo "body<<$delimiter" >> $GITHUB_OUTPUT
+          echo "$body" >> $GITHUB_OUTPUT
+          echo "$delimiter" >> $GITHUB_OUTPUT
+
+      - name: Commit changes
+        uses: peter-evans/create-pull-request@v4
+        with:
+          commit-message: "Synchronise Device Classes from Home Assistant"
+          committer: esphomebot <esphome@nabucasa.com>
+          author: esphomebot <esphome@nabucasa.com>
+          branch: sync/device-classes/
+          branch-suffix: timestamp
+          delete-branch: true
+          title: "Synchronise Device Classes from Home Assistant"
+          body: ${{ steps.pr-template-body.outputs.body }}