There's been some discussion of that around. Currently, the major static analysis projects see to want to take a wait-and-see approach and see what sort of attributes people start using, and then standardize those. Hopefully in 6-8 months or so they'll have a better idea of what would be useful and we can start making a FIG-standard set of attributes.
The first out of the gate was JetBrains, who added some attributes to PHPStorm already (or at least the upcoming version):
https://blog.jetbrains.com/phpstorm/2020/10/phpstorm-2020-3-eap-4/
--Larry Garfield