Added GitHub Actions deployment workflow

.github/workflows/deploy.yml

@@ -0,0 +1,17 @@
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Deploy
+      uses: JamesIves/github-pages-deploy-action@v4
+      with:
+        folder: build
+        branch: gh-pages