feat: add build docs gh action

Author: cdpaiva

.github/workflows/build-docs.yaml

@@ -0,0 +1,32 @@
+name: Build and Deploy Sphinx Docs
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'docs/**'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+
+      - name: Install dependencies
+        run: pip install sphinx sphinx-book-theme
+      - name: Build HTML
+        run: sphinx-build -b html docs/source docs/build
+
+      - name: Deploy to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: docs/build