Added a query interface with 5-hour and weekly limit restrictions

What variant of Codex are you using?

App、CLI

What feature would you like to see?

I am an embedded developer. Recently, I have been developing a desktop secondary monitor to monitor the current computer information, as well as the current Codex balance information and working status. However, I couldn't find any relevant interfaces for balance limit to achieve my function. I hope that the Codex balance limit query function-related API interfaces can be added as soon as possible for users to conduct secondary development.

<img width="4032" height="3024" alt="Image" src="https://github.com/user-attachments/assets/0d32899f-9589-4e31-b087-2501f83659d8" />

Additional information

_No response_