CI: Build and deploy docs to GitHub pages

.github/workflows/docs.yaml

@@ -0,0 +1,50 @@
+name: docs
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    permissions:
+      contents: read
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+          cache: pip
+      - name: Install Hatch
+        uses: pypa/hatch@install
+      - name: Build docs
+        run: hatch run docs:build
+      - name: Enable GitHub Pages
+        uses: actions/configure-pages@v5
+      - name: Upload docs
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: './docs/_build/html'
+
+  deploy:
+    permissions:
+      pages: write
+      id-token: write
+    needs: build
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy docs
+        id: deployment
+        uses: actions/deploy-pages@v4