refator(@theme): add menu transclusion in one-coll layout

src/app/pages/pages.module.ts

@@ -1,5 +1,10 @@
 import { NgModule } from '@angular/core';
 
+import {
+  NgaSidebarModule,
+  NgaMenuModule
+} from '@nga/theme';
+
 import { PagesComponent } from './pages.component';
 import { DashboardComponent } from './dashboard/dashboard.component';
 import { PagesRoutingModule } from './pages-routing.module';
@@ -7,6 +12,8 @@ import { ThemeModule } from '../@theme/theme.module';
 
 @NgModule({
   imports: [
+    NgaSidebarModule.forRoot(),
+    NgaMenuModule.forRoot(),
     PagesRoutingModule,
     ThemeModule
   ],