[Feature Request] Add ability to inherit attributes of base class

https://gitlab.com/NamingThingsIsHard/libraries/inheriteRS/-/blob/c6099b62b2d798192d5e4e5c2ceae7d671e61dd7/src/lib.rs#L195-205 shows that attributes aren't being inherited at all (#[some_macro()] should be in struct EFG). Which is a bug, but also provides the opportunity to introduce optional inheritance of attributes.