Deploy on github pages

.github/workflows/deploy-gh.yml

@@ -0,0 +1,34 @@
+name: Deploy on github pages
+
+on:
+  push:
+    branches:
+      - webgl
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Setup Node.js 18.x
+        uses: actions/setup-node@v2
+        with:
+          node-version: 18.x
+          cache: 'yarn'
+
+      - name: Install dependencies
+        run: yarn install
+
+      # - name: Test
+      #   run: yarn test
+
+      - name: Build
+        run: yarn build
+
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./excalidraw-app/build