feat: add UI for settings and app configuration (#90)

Add settings and app configuration UI for web app and self service
applications.

src/app/settings/settings.module.spec.ts

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