Add frontend folder & setup frontend project

frontend/allowance-planner-v2/src/app/app-routing.module.ts

@@ -0,0 +1,16 @@
+import { NgModule } from '@angular/core';
+import { PreloadAllModules, RouterModule, Routes } from '@angular/router';
+
+const routes: Routes = [
+  {
+    path: '',
+    loadChildren: () => import('./tabs/tabs.module').then(m => m.TabsPageModule)
+  }
+];
+@NgModule({
+  imports: [
+    RouterModule.forRoot(routes, { preloadingStrategy: PreloadAllModules })
+  ],
+  exports: [RouterModule]
+})
+export class AppRoutingModule {}