feat: 添加页面加载进度条NProgress

在路由切换时显示加载进度条，提升用户体验

frontend/package-lock.json

@@ -15,6 +15,7 @@
         "echarts": "^5.5.0",
         "element-plus": "^2.8.4",
         "highlight.js": "^11.10.0",
+        "nprogress": "^0.2.0",
         "pinia": "^3.0.0",
         "pinia-plugin-persistedstate": "^4.3.0",
         "sass": "1.63.2",
@@ -2293,6 +2294,12 @@
       "integrity": "sha512-Wj7+EJQ8mSuXr2iWfnujrimU35R2W4FAErEyTmJoJ7ucwTn2hOUSsRehMb5RSYkxXGTM7Y9QpvPmp++w5ftoJw==",
       "license": "BSD-3-Clause"
     },
+    "node_modules/nprogress": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmmirror.com/nprogress/-/nprogress-0.2.0.tgz",
+      "integrity": "sha512-I19aIingLgR1fmhftnbWWO3dXc0hSxqHQHQb3H8m+K3TnEn/iSeTZZOyvKXWqQESMwuUVnatlCnZdLBZZt2VSA==",
+      "license": "MIT"
+    },
     "node_modules/nypm": {
       "version": "0.6.0",
       "resolved": "https://registry.npmmirror.com/nypm/-/nypm-0.6.0.tgz",