Add GitHub Pages workflow

.github/workflows/mkdocs.yml

@@ -0,0 +1,35 @@
+name: Deploy mkdocs site to Pages
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+          token: ${{ secrets.PAT }}
+      - uses: actions/setup-python@v2
+      - run: pip install -e mkdocs-material-insiders
+      - run: mkdocs build
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          personal_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./site
+          user_name: GitHub Actions
+          user_email: