Add GitHub Actions workflows for docs deployment

.github/workflows/deploy-docs.yml

@@ -0,0 +1,41 @@
+name: Deploy Docs
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'docs/**'
+      - '.github/workflows/deploy-docs.yml'
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  deploy:
+    name: Build and deploy Docusaurus site
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install docs dependencies
+        working-directory: docs
+        run: npm install --legacy-peer-deps
+
+      - name: Build docs
+        working-directory: docs
+        run: npm run build
+
+      - name: Deploy to gh-pages
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: docs/build
+          publish_branch: gh-pages
+          user_name: github-actions[bot]
+          user_email: github-actions[bot]@users.noreply.github.com

.github/workflows/test-docs.yml

@@ -0,0 +1,26 @@
+name: Test Docs Build
+
+on:
+  pull_request:
+    paths:
+      - 'docs/**'
+      - '.github/workflows/test-docs.yml'
+
+jobs:
+  build:
+    name: Build Docusaurus site
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install docs dependencies
+        working-directory: docs
+        run: npm install --legacy-peer-deps
+
+      - name: Build docs
+        working-directory: docs
+        run: npm run build