add workflow to deploy to cloudflare pages

.github/workflows/pages-deployment.yaml

@@ -0,0 +1,23 @@
+on: [push]
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      deployments: write
+    name: Deploy to Cloudflare Pages
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Install Nix
+        uses: cachix/install-nix-action@v30
+      - name: Build
+        run: nix build
+      - name: Publish
+        uses: cloudflare/pages-action@v1
+        with:
+          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+          projectName: m32.io # e.g. 'my-project'
+          directory: result # e.g. 'dist'
+          gitHubToken: ${{ secrets.GITHUB_TOKEN }}