chore(action): add doc workflow

.github/workflows/docs.yml

@@ -0,0 +1,82 @@
+name: docs
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - ".github/workflows/docs.yml"
+      - "docs/**"
+      - "dmf/**"
+      - "mkdocs.yml"
+      - "pyproject.toml"
+      - "poetry.lock"
+      - "Makefile"
+  pull_request:
+    paths:
+      - ".github/workflows/docs.yml"
+      - "docs/**"
+      - "dmf/**"
+      - "mkdocs.yml"
+      - "pyproject.toml"
+      - "poetry.lock"
+      - "Makefile"
+  workflow_dispatch:
+
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+jobs:
+  build:
+    name: Build MkDocs site
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Set up Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: "3.12"
+
+      - name: Install Poetry
+        run: pipx install poetry
+
+      - name: Configure Poetry
+        run: poetry config virtualenvs.in-project true
+
+      - name: Install documentation dependencies
+        run: poetry install --with docs --no-interaction
+
+      - name: Build documentation
+        run: poetry run mkdocs build --site-dir site
+
+      - name: Configure GitHub Pages
+        uses: actions/configure-pages@v5
+
+      - name: Upload GitHub Pages artifact
+        uses: actions/upload-pages-artifact@v4
+        with:
+          path: site
+
+  deploy:
+    name: Deploy to GitHub Pages
+    if: github.ref == 'refs/heads/main' && github.event_name != 'pull_request'
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4