Feature Request: Transitive headers settable

I need to be able to set transitive headers true / false for specific packages.
This is possible via the package xml.
But it is not really a beautiful interface to do so.
One would have to loop through the requirements and implement a switch case.

Feels a bit overlooked.

Maybe making it an argument in the conandata.yml would be cool.
At the moment this file will be overwritten when doing changes with the conan clion plugin.