[featreq] add option to hide / disable copilot

## add option to hide ai commit writer / copilot button 
<img width="40%" alt="Image" src="https://github.com/user-attachments/assets/f0dfdb9a-8314-4525-aab2-0435dbe4d61b" />

<img width="30%" alt="Image" src="https://github.com/user-attachments/assets/cf35dc31-b085-4265-8418-158ca45b91ce" />