refactor(projects): 路由文件夹拆分模块，代码重构

src/router/modules/index.ts

@@ -0,0 +1,6 @@
+import ROOT from './root';
+import DASHBOARD from './dashboard';
+import EXCEPTION from './exception';
+import MULTI_MENU from './multiMenu';
+
+export default [ROOT, DASHBOARD, EXCEPTION, MULTI_MENU];