add playground.

package.json

@@ -13,15 +13,15 @@
     "@codemirror/lang-cpp": "^6.0.2",
     "@codemirror/lang-python": "^6.1.2",
     "@element-plus/icons-vue": "^2.1.0",
-    "@vueuse/core": "^10.1.0",
+    "@vueuse/core": "^10.1.2",
     "@wangeditor/editor": "^5.1.23",
     "@wangeditor/editor-for-vue": "^5.1.12",
-    "axios": "1.3.5",
-    "chart.js": "^4.2.1",
+    "axios": "1.4.0",
+    "chart.js": "^4.3.0",
     "codemirror": "^6.0.1",
     "copy-text-to-clipboard": "^3.1.0",
-    "date-fns": "^2.29.3",
-    "highlight.js": "^11.7.0",
+    "date-fns": "^2.30.0",
+    "highlight.js": "^11.8.0",
     "naive-ui": "^2.34.3",
     "normalize.css": "^8.0.1",
     "party-js": "^2.2.0",
@@ -33,18 +33,18 @@
   },
   "devDependencies": {
     "@iconify-json/ep": "^1.1.10",
-    "@types/node": "^18.15.13",
-    "@vitejs/plugin-legacy": "^4.0.2",
-    "@vitejs/plugin-vue": "^4.1.0",
+    "@types/node": "^18.16.3",
+    "@vitejs/plugin-legacy": "^4.0.3",
+    "@vitejs/plugin-vue": "^4.2.1",
     "markdown-it-shiki": "^0.8.1",
-    "prettier": "^2.8.7",
+    "prettier": "^2.8.8",
     "terser": "^5.17.1",
     "typescript": "^5.0.4",
     "unplugin-auto-import": "^0.15.3",
     "unplugin-icons": "^0.16.1",
     "unplugin-vue-components": "^0.24.1",
-    "vite": "^4.3.1",
-    "vite-plugin-vue-markdown": "^0.22.6",
-    "vue-tsc": "^1.4.4"
+    "vite": "^4.3.4",
+    "vite-plugin-vue-markdown": "^0.23.0",
+    "vue-tsc": "^1.6.4"
   }
 }