Added Github Pages workflow for Sphinx docs

.github/workflows/build_docs.yml

@@ -0,0 +1,53 @@
+# Workflow for building Sphinx docs and deploying to GH Pages
+name: Build Sphinx docs and deploy to GH Pages
+
+on:
+  # Runs on pushes
+  push # TODO: Update to push on main branch only before merging to main
+
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, cancelling in-progress runs.
+concurrency:
+  group: "pages"
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "The job was automatically triggered by a ${{ github.event_name }} event."
+      - run: echo "This job is now running on a ${{ runner.os }} server."
+      - run: echo "Running on branch ${{ github.ref }} of repository ${{ github.repository }}."
+      - name: Check out repository code.
+        uses: actions/checkout@v3
+      - name: Python environment setup
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.8
+      - name: Install dependencies.
+        run: |
+          sudo apt-get update
+          sudo apt-get install libsfml-dev
+          git submodule sync
+          git submodule update --init --recursive
+          python -m pip install -U pip
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+          if [ -f requirements.dev.txt ]; then pip install -r requirements.dev.txt; fi
+          pip install -e .
+      - name: Build HTML docs
+        run: sphinx-build -b html docs/source/ docs/build/html
+      - name: Setup Pages
+        uses: actions/configure-pages@v3
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v1
+        with:
+          path: './docs/build/html' # Upload HTML docs only
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v2