feat: add a docs workflow

.github/workflows/build-docs.yaml

@@ -0,0 +1,48 @@
+name: build-docs
+on:
+  push:
+    branches: [main]
+
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: true
+
+jobs:
+  build-docs:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+
+      - name: Install python dependencies
+        run: python -m pip install sphinx sphinx-rtd-theme sphinx-sitemap
+
+      - name: Build documentation
+        run: |
+          sphinx-apidoc -o docs/source sortedl1
+          cd docs
+          make html
+
+      - name: Setup pages
+        uses: actions/configure-pages@v3
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v2
+        with:
+          path: "docs/build/html/"
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v2