Add GitHub Actions workflow for deploying docs

Author: vsvito420

.github/workflows/deploy-docs.yml

@@ -0,0 +1,25 @@
+name: Deploy Docs
+
+on:
+  push:
+    branches:
+      - readthedocs
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python 3.13
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+      - name: Install dependencies
+        run: pip install sphinx
+      - name: Build documentation
+        run: cd docs && sphinx-build -b html . _build
+      - name: Deploy to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: docs/_build