add documentation

.github/workflows/pages.yml

@@ -0,0 +1,44 @@
+name: Deploy documentation to GitHub Pages
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - "docs-site/**"
+      - ".github/workflows/pages.yml"
+      - "README.md"
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+concurrency:
+  group: pages-deploy
+  cancel-in-progress: true
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: pip
+          cache-dependency-path: docs-site/requirements.txt
+
+      - name: Install MkDocs Material
+        run: pip install -r docs-site/requirements.txt
+
+      - name: Build site
+        run: mkdocs build -f docs-site/mkdocs.yml
+
+      - name: Deploy to gh-pages branch
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./docs-site/site
+          force_orphan: true
+          enable_jekyll: false