[ci] feat: add docs build workflow

.github/workflows/docs.yml

@@ -0,0 +1,29 @@
+name: docs
+
+on:
+  pull_request:
+  push:
+    branches: [main, master]
+
+jobs:
+  build-docs:
+    name: Build documentation
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install .
+          pip install -r docs/requirements.txt
+
+      - name: Build site
+        run: mkdocs build --strict