fix(@schematics/angular): order of module properties is inconsistent

Closes #12509

Author: alan-agius4

packages/schematics/angular/module/files/__name@dasherize@if-flat__/__name@dasherize__.module.ts

@@ -4,10 +4,10 @@ import { CommonModule } from '@angular/common';<% } %><% if (routing) { %>
 import { <%= classify(name) %>RoutingModule } from './<%= dasherize(name) %>-routing.module';<% } %>
 
 @NgModule({
+  declarations: [],
   imports: [<% if (commonModule) { %>
     CommonModule<%= routing ? ',' : '' %><% } %><% if (routing) { %>
     <%= classify(name) %>RoutingModule<% } %>
-  ],
-  declarations: []
+  ]
 })
 export class <%= classify(name) %>Module { }