Add polling script

.github/workflows/poll.yaml

@@ -0,0 +1,27 @@
+name: Poll for Git Mastery problem sets
+
+on:
+  schedule:
+    - cron: "0 12 * * *"
+
+jobs:
+  poll:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get current problems directory
+        uses: actions/checkout@v4
+      - name: List directories
+        run: |
+          ls
+          pwd
+          touch hello.txt
+          ls
+          git status
+      - name: Fetch all
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.ORG_PAT }}
+          script: |
+            const repos = await github.paginate(github.rest.search.repos, {
+              q: "topic:problem-set org:git-mastery",
+            })