[Frontend] Add bitrate to the "Cockpit display" configuration

<img width="663" height="748" alt="Image" src="https://github.com/user-attachments/assets/aee6dfbf-589e-44ba-b1a4-b00625ada3a8" />

Cockpit display should also display the bitrate, with options following:

<img width="770" height="132" alt="Image" src="https://github.com/user-attachments/assets/3f9f2dd6-7987-40b8-bacf-94f5b472f9ef" />