GDB Additional Attach Command for local executable

Hi, this is my first bug report.

I'm debugging an application which loads many libraries.
To speed up debugging I've disabled automatic symbol loading with GDB command:

set auto-solib-add off 

(Set in Project -> Run -> Debugger Settings -> Additional startup commands)

Then I'd like to load symbols from a subset of the shared libraries (for example Qt5Core.dll and other Qt related libraries). This can be done with GDB command:

sharedlibrary Qt5Core.dll

But it needs to be executed AFTER the inferior is started.

There is a global GDB settings called "Additional Attach Command" which would do this but it works only for remote targets. Instead I'm debugging a locally compiled program.

Can this setting made to work also for local debugged applications?
Looking at the source code doesn't seem to difficult but I took only a quick look.{}

A similar issue was opened some years ago QTCREATORBUG-16351 but it was closed.