ci: add build

.github/workflows/build.yml

@@ -0,0 +1,27 @@
+name: Build
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.head_ref }}
+
+      - name: Setup Deno
+        uses: ./
+
+      - run: deno run -A ./bundle.ts
+
+      - name: Push changes
+        uses: stefanzweifel/git-auto-commit-action@v5
+        with:
+          file_pattern: "dist/*"
+          commit_message: "chore: build action bundle"
+          commit_author: "github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>"