chore(workflow): add sync-upstream (labring#1376)

.github/workflows/sync-upstream.yml

@@ -0,0 +1,36 @@
+name: Upstream Sync
+
+permissions:
+  contents: write
+
+on:
+  schedule:
+    - cron: "0 0 * * *" # every day
+  workflow_dispatch:
+
+jobs:
+  sync_latest_from_upstream:
+    name: Sync latest commits from upstream repo
+    runs-on: ubuntu-latest
+    if: ${{ github.event.repository.fork }}
+
+    steps:
+      - name: Checkout target repo
+        uses: actions/checkout@v3
+
+      - name: Sync upstream changes
+        id: sync
+        uses: aormsby/[email protected]
+        with:
+          upstream_sync_repo: labring/laf
+          upstream_sync_branch: main
+          target_sync_branch: main
+          target_repo_token: ${{ secrets.GITHUB_TOKEN }} # automatically generated, no need to set
+          # Set test_mode true to run tests instead of the true action!!
+          test_mode: false
+
+      - name: Sync check
+        if: failure()
+        run: |
+          echo "[Error] Due to the change of the workflow file in the upstream warehouse, GitHub automatically suspended this automatic update, you need to manually Sync Fork once."
+          exit 1