ci: Host cargo doc on GitHub Pages

.github/workflows/cargo-doc-pages.yml

@@ -0,0 +1,42 @@
+name: Deploy `cargo doc` to GitHub Pages
+
+on:
+  push:
+    # branches:
+      # - main
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  deploy-doc:
+    runs-on: ubuntu-latest
+
+    environment:
+      name: github-pages
+      url: ${{steps.deployment.outputs.page_url}}
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Pages
+        uses: actions/configure-pages@v3
+
+      - name: Run `cargo doc`
+        run: cargo doc --lib --no-deps
+
+      - name: Upload Artifact
+        uses: actions/upload-pages-artifact@v2
+        with:
+          path: 'target/doc'
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v2