BAEL-4842 - Use React and Spring Boot to Build a Simple CRUD App

Updating PR to reduce complexity of react components
Fixing react test

spring-boot-modules/spring-boot-react/frontend/src/App.test.js

@@ -3,6 +3,6 @@ import App from './App';
 
 test('renders learn react link', () => {
   render(<App />);
-  const linkElement = screen.getByText(/learn react/i);
+  const linkElement = screen.getByText(/Clients/i);
   expect(linkElement).toBeInTheDocument();
 });