Add workflow to recreate staging branch when it doesn't exist (#73)

Author: mattapperson

.github/workflows/recreate-staging.yaml

@@ -0,0 +1,36 @@
+name: Recreate Staging Branch
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+
+jobs:
+  recreate-staging:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Check if staging branch exists
+        id: check-staging
+        run: |
+          if git ls-remote --heads origin staging | grep -q staging; then
+            echo "exists=true" >> $GITHUB_OUTPUT
+          else
+            echo "exists=false" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Recreate staging branch
+        if: steps.check-staging.outputs.exists == 'false'
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git checkout -b staging
+          git push origin staging