First attempt at mirroring to gitlab

.github/workflows/mirror_to_gitlab.yaml

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+name: Mirror to GitLab
+
+on:
+  push:
+  delete:
+  workflow_dispatch:  # This enables manual triggering
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Wait for other instances of this workflow to conclude
+        uses: softprops/turnstyle@8db075d65b19bf94e6e8687b504db69938dc3c65
+        with:
+          same-branch-only: 'true'
+          abort-after-seconds: 300
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Checkout Repository
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ github.ref }}
+          fetch-depth: 0  # Fetch full history
+
+      - name: Set up Git
+        run: |
+          git config --global user.name 'GitHub Action'
+          git config --global user.email 'action@github.com'
+
+      - name: Set up SSH
+        uses: webfactory/ssh-agent@v0.5.3
+        with:
+          ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
+
+      - name: Add GitLab public keys
+        run: |
+          ssh-keyscan -H gitlab.com >> ~/.ssh/known_hosts
+
+      - name: Sync and commit changes
+        id: sync-and-commit
+        run: |
+          git lfs pull
+
+          # Add GitLab remote
+          git remote add gitlab git@gitlab.com:sunnypilot/public/sunnypilot.git
+
+          # Fetch from GitLab and check if the branch exists
+          if git fetch gitlab ${{ github.ref }}; then
+              # Merge changes from GitLab if the branch exists
+              git merge gitlab/${{ github.ref_name }} --allow-unrelated-histories --strategy-option=theirs
+          else
+              echo "Branch does not exist on GitLab, skipping merge."
+          fi
+          git push -u gitlab ${{ github.ref }} # If you have issues with "push rejected missing LFS" or something. Make sure you disabled LFS on the GITLAB repo if you intend to use a different LFS repo other than the target repo