added github pages workflow

.github/workflows/deploy-docs.yml

@@ -0,0 +1,36 @@
+name: Deploy Sphinx Docs to GitHub Pages
+
+on:
+  push:
+    branches:
+      - main  # Adjust this if your default branch is not 'main'
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.12'  # Specify the Python version you need
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install sphinx
+        pip install -r docs/requirements.txt  # Adjust if you have additional requirements
+
+    - name: Build documentation
+      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