Add workflow to update flag file on push to main

Author: rjones-sw

.github/workflows/update-flags.yml

@@ -0,0 +1,25 @@
+# Workflow for updating flags in the repository
+name: Update Flags
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  update_flags:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v3
+      - name: Update Flag File
+        run: |
+          echo "Last updated: $(date -u)" > flag.txt
+      - name: Commit and Push Flag
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add flag.txt
+          git commit -m "Update flag on directory change" || echo "No changes to commit"
+          git push