Add GitHub Pages workflow for website deployment

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Co-Authored-By: Claude <noreply@anthropic.com>

Author: ad-si

.github/workflows/pages.yml

@@ -0,0 +1,34 @@
+name: Deploy LuaSCAD Website
+
+on:
+  push:
+    branches: [ "main" ]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Setup Pages
+        uses: actions/configure-pages@v3
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v2
+        with:
+          path: './website'
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v2