build: deploy examples to GitHub pages on main runs

Author: spike-rabbit

.github/workflows/build.yaml

@@ -98,7 +98,25 @@ jobs:
         with:
           name: pages
           path: dist/design
-# TODO: build design system
+
+  publish-documentation:
+    if: github.ref_name == github.event.repository.default_branch
+    runs-on: ubuntu-22.04
+    permissions:
+      pages: write
+      id-token: write
+    needs:
+      - documentation
+    steps:
+      - uses: actions/configure-pages@v5
+      - uses: actions/download-artifact@v4
+        with:
+          name: pages
+          path: dist/design
+      - uses: actions/upload-pages-artifact@v3
+        with:
+          path: 'dist/design'
+      - uses: actions/deploy-pages@v4
 # TODO: add release job
 # TODO: build PR previews
 # TODO: e2e test