chore: moved exampled to frontend

frontend/examples/angular/src/main.ts

@@ -0,0 +1,13 @@
+import { enableProdMode } from '@angular/core';
+import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
+
+import { AppModule } from './app/app.module';
+import { environment } from './environments/environment';
+
+if (environment.production) {
+  enableProdMode();
+}
+
+platformBrowserDynamic()
+  .bootstrapModule(AppModule)
+  .catch((err) => console.error(err));