feat(dashboard): add contacts and room selector components

src/app/@core/data/data.module.ts

@@ -0,0 +1,27 @@
+import { NgModule, ModuleWithProviders } from '@angular/core';
+import { CommonModule } from '@angular/common';
+
+import { UserService } from './users.service';
+
+const SERVICES = [
+  UserService,
+];
+
+@NgModule({
+  imports: [
+    CommonModule,
+  ],
+  providers: [
+    ...SERVICES,
+  ],
+})
+export class DataModule {
+  static forRoot(): ModuleWithProviders {
+    return <ModuleWithProviders>{
+      ngModule: DataModule,
+      providers: [
+        ...SERVICES,
+      ],
+    };
+  }
+}