Adds github action to deploy to github pages

.github/workflows/nextjs.yml

@@ -0,0 +1,42 @@
+name: Node.js CI
+
+on:
+  pull_request:
+    branches: ["main"]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [18.x]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: "npm"
+      - run: npm ci
+      - run: npm run lint
+      - name: Next.js build
+        run: npm run build
+      - name: Static HTML export
+        run: next export
+      - name: Artifacts upload
+        uses: actions/upload-pages-artifact@v2
+        with:
+          path: ./out
+
+  # Github pages deployment
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v2