Add GitHub Actions workflow for Docs deployment

Author: Pauljanson002

.github/workflows/main.yml

@@ -0,0 +1,33 @@
+name: Build and Deploy Docs
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.10"
+
+      - name: Install dependencies
+        run: |
+          pip install sphinx sphinx_rtd_theme
+          # add more dependencies if needed (e.g., numpydoc, myst_parser)
+
+      - name: Build HTML
+        run: |
+          cd docs
+          make html
+
+      - name: Deploy to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./docs/_build/html