Add weekly repository traffic tracking workflow

.github/workflows/traffic.yml

@@ -0,0 +1,46 @@
+# This workflow uses actions that are not certified by GitHub. They are provided
+# by a third-party and are governed by separate terms of service, privacy
+# policy, and support documentation.
+
+# Persists GitHub repository traffic (views and clones) past the default 2-week
+# retention period by appending the data to CSV files stored on the `traffic`
+# branch. Requires a `TRAFFIC_ACTION_TOKEN` repository secret containing a
+# personal access token with `repo` scope so the action can read the traffic API.
+name: 'traffic'
+
+permissions: {}
+
+on:
+  schedule:
+    # Runs once a week on Sunday.
+    - cron: '55 23 * * 0'
+  workflow_dispatch:
+
+jobs:
+  traffic:
+    runs-on: ubuntu-latest
+    permissions:
+      # Needed to push the CSV files to the `traffic` branch.
+      contents: write
+    steps:
+      - name: 'Checkout traffic branch'
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          ref: 'traffic'
+
+      - name: 'Collect repository traffic'
+        uses: sangonzal/repository-traffic-action@404df77a0bfb110f8977fe14ddba62451ec868b7 # v.0.1.6
+        env:
+          TRAFFIC_ACTION_TOKEN: ${{ secrets.TRAFFIC_ACTION_TOKEN }}
+
+      - name: 'Commit traffic data'
+        run: |
+          git config user.name 'github-actions[bot]'
+          git config user.email '41898282+github-actions[bot]@users.noreply.github.com'
+          git add ./traffic/
+          if git diff --cached --quiet; then
+            echo 'No traffic changes to commit.'
+            exit 0
+          fi
+          git commit -m 'chore: update repository traffic stats'
+          git push origin HEAD:traffic