Add deployment workflow (#2)

* Add deployment workflow

* Revert a step to run build

* Set env explicitly

* Set target paths

.github/workflows/deployment.yml

@@ -0,0 +1,49 @@
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches: ["main"]
+    paths:
+      - public/**
+      - src/**
+      - .github/workflows/deployment.yml
+      - pnpm-lock.yaml
+      - index.html
+      - vite.config.ts
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+env:
+  VITE_GRAPHQL_ENDPOINT_URL: ${{ vars.VITE_GRAPHQL_ENDPOINT_URL }}
+
+jobs:
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/configure-pages@v5
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: package.json
+      - uses: pnpm/action-setup@v4
+      - run: pnpm install
+      - run: pnpm build
+      - uses: actions/upload-pages-artifact@v3
+        with:
+          path: dist
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4