add action for github pages

Author: ashryaagr

.github/workflows/docs.yml

@@ -0,0 +1,36 @@
+name: Build and Deploy Documentation
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.x
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r docs/requirements.txt
+
+      - name: Build documentation
+        working-directory: docs
+        run: |
+          cd source
+          make html
+
+      - name: Deploy to gh-pages branch
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: docs/_build/html
+          publish_branch: gh-pages