Build a React app that displays a counter starting at 0.
Requirements:
- Show the text
You clicked {count} times. - Render a button labeled
Click Me. - When the button is clicked, increase the counter by
1. - Use React state to store and update the count.
- Include a navbar component with the title
React App.
The component should use the provided h8k-navbar component. The counter text should have data-testid="output", and the button should have data-testid="add-button".
This is a classic React state-management exercise. The key idea is to store the counter value with useState and increment it on each button click using setCount(count + 1). The UI includes a navbar titled "React App", a text output showing "You clicked {count} times", and a "Click Me" button with the required test IDs. It is a straightforward but important frontend OA question focused on component state and event handling.