add calendar settings

src/app/services/calendar-settings-service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { CalendarSettingsService } from './calendar-settings-service';
+
+describe('CalendarSettingsService', () => {
+	let service: CalendarSettingsService;
+
+	beforeEach(() => {
+		TestBed.configureTestingModule({});
+		service = TestBed.inject(CalendarSettingsService);
+	});
+
+	it('should be created', () => {
+		expect(service).toBeTruthy();
+	});
+});