Users can now search for menu items from the app switcher and quickly jump to the right screen, making navigation faster for commonly used pages like Companies. A new Alt+H shortcut opens the app switcher search, and a shortcut help modal is available from the user menu.

This change combines existing debug options into a single developer mode and lets teams turn individual development tools on or off. It makes troubleshooting and development more flexible, but these tools must not be enabled in production because they can expose powerful debugging access.

Purpose:
- Merge dev mode and debug mode
- Allow to active dev feature one by one
## 

I confirm I have signed the CLA and read the PR guidelines at www.odoo.com/submit-pr