feat: update UI for self service user management (#89)

Update UI for self service user management using angular material.

src/app/self-service/self-service.module.ts

@@ -1,20 +1,26 @@
 import { NgModule, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
 import { CommonModule } from '@angular/common';
+import { FormsModule } from '@angular/forms';
 
-import { UserManagementComponent } from './user-management/user-management.component';
+import { CoreModule } from '../core/core.module';
 import { SelfServiceRoutingModule } from './self-service-routing.module';
+import { UserManagementComponent } from './user-management/user-management.component';
 import { CreateUserComponent } from './create-user/create-user.component';
 import { ViewUserComponent } from './view-user/view-user.component';
+import { EditUserComponent } from './edit-user/edit-user.component';
 
 @NgModule({
   imports: [
     CommonModule,
+    CoreModule,
+    FormsModule,
     SelfServiceRoutingModule
   ],
   declarations: [
     UserManagementComponent,
     CreateUserComponent,
-    ViewUserComponent
+    ViewUserComponent,
+    EditUserComponent
   ],
   schemas: [
    CUSTOM_ELEMENTS_SCHEMA