Check coding style with GitHub CI

Close #6

.github/workflows/docs.yml

@@ -0,0 +1,38 @@
+name: Docs CI
+
+on:
+  push:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v3
+        with: 
+          submodules: 'true'
+      - name: Configure GitHub Pages
+        uses: actions/configure-pages@v3
+      - name: Install dependencies
+        run: sudo apt-get install doxygen
+      - name: Build documentations
+        run: doxygen
+      - name: Upload the artifact
+        uses: actions/upload-pages-artifact@v1
+        with:
+          path: docs/html
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: build
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v1