Basic idea
It would great if you can easily add folders or documents to your list of favorites. (1)
And have an extra tab next to the app explorer tab with a list of all your favorites (2) so you have quick access to all the important areas in the application.
Project-level
If you implement this on the project-level of your application it would greatly benefit new developers unfamiliar with the application in navigating the key areas. Being able to add a description to the bookmark will help this process.
User-level
Or you could implement it on the user level. So every developer can set his/her own favorites to speed up their workflow 🏎️🏎️🏎️ 🏁