feat(cd): add release action (#4)

## 📃 Summary

closes #3

.github/workflows/main.yml

@@ -70,3 +70,26 @@ jobs:
 
       - name: run tests
         run: make test-ci
+
+  release:
+    name: release
+    if: ${{ github.ref == 'refs/heads/main' }}
+    needs:
+      - tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: google-github-actions/release-please-action@v3
+        id: release
+        with:
+          release-type: simple
+          package-name: YOUR_REPOSITORY_NAME
+
+      - name: tag new release
+        if: ${{ steps.release.outputs.release_created }}
+        run: |
+          git config user.name github-actions[bot]
+          git config user.email github-actions[bot]@users.noreply.github.com
+          git remote add gh-token "https://${{ secrets.GITHUB_TOKEN }}@github.com/google-github-actions/release-please-action.git"
+          NEXT_TAG="${{ steps.release.outputs.version }}" make release