feat: UI for self service user management (#49)

Add initial UI design for self service user management.

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

@@ -0,0 +1,13 @@
+import { SelfServiceModule } from './self-service.module';
+
+describe('SelfServiceModule', () => {
+  let selfServiceModule: SelfServiceModule;
+
+  beforeEach(() => {
+    selfServiceModule = new SelfServiceModule();
+  });
+
+  it('should create an instance', () => {
+    expect(selfServiceModule).toBeTruthy();
+  });
+});