add ci job to build shpinx docs

.github/workflows/docs.yml

@@ -0,0 +1,48 @@
+name: Build Documentation
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*'
+  pull_request:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  docs:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.10]
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Initialize Virtualenv
+      run: |
+        python -m pip install --upgrade pip virtualenv
+        python -m venv .venv
+    - name: Install dependencies
+      run: |
+        source .venv/bin/activate
+        pip install -r requirements.txt
+        pip install -r docs/requirements.txt
+    - name: Install package into virtualenv
+      run: |
+        source .venv/bin/activate
+        make install
+    - name: Build docs
+      run: |
+        source .venv/bin/activate
+        make docs
+    - name: Deploy docs
+      uses: peaceiris/actions-gh-pages@v3
+      if: ${{ github.ref == 'refs/heads/main' }}
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        publish_dir: ./docs/_build/html