ci/cd: add auto deployment for docs website

.github/workflows/deploy-docs.yml

@@ -0,0 +1,51 @@
+name: Deploy Docs
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - "docs/**"
+
+jobs:
+  build:
+    name: Build Docusaurus
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: lts/*
+          cache: "npm"
+          cache-dependency-path: docs/package-lock.json
+
+      - name: Install dependencies
+        run: npm install
+        working-directory: ./docs
+
+      - name: Build website
+        run: npm run build
+        working-directory: ./docs
+
+      - name: Upload Build Artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: docs/build
+
+  deploy:
+    name: Deploy to GitHub Pages
+    needs: build
+
+    permissions:
+      pages: write
+      id-token: write
+
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4