add lazy loading angular code example

Example 1: creating a module with lazy loading in angular 9

ng g m customers --route customers --module app.module

Example 2: angular lazy loading

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      const routes: Routes = [
  {
    path: 'customers',
    loadChildren: () => import('./customers/customers.module').then(m => m.CustomersModule)
  },
  {
    path: 'orders',
    loadChildren: () => import('./orders/orders.module').then(m => m.OrdersModule)
  },
  {
    path: '',
    redirectTo: '',
    pathMatch: 'full'
  }
];

Example 3: angular lazy loading images

mport { Component } from '@angular/core';@Component({  selector: 'image',  template: `    <img [defaultImage]="defaultImage" [lazyLoad]="image">  `})class ImageComponent {  defaultImage = 'https://www.placecage.com/1000/1000';  image = 'https://images.unsplash.com/photo-1443890923422-7819ed4101c0?fm=jpg';}