add initial Angular components, services, and routing setup

client/src/app/guards/auth-only/auth-only.guard.spec.ts

@@ -0,0 +1,17 @@
+import { TestBed } from '@angular/core/testing';
+import { CanMatchFn } from '@angular/router';
+
+import { authOnlyGuard } from './auth-only.guard';
+
+describe('authOnlyGuard', () => {
+  const executeGuard: CanMatchFn = (...guardParameters) => 
+      TestBed.runInInjectionContext(() => authOnlyGuard(...guardParameters));
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+  });
+
+  it('should be created', () => {
+    expect(executeGuard).toBeTruthy();
+  });
+});