Adding user-defined symbols to GDB

Hello,

I have a list of symbols that I have parsed out from a section within
the binary. The data is not in any standard symbol table format. I have
extracted the symbol's name and address. I want to add these symbols to
GDB, but it is non-trivial. The solutions that I have seen for adding
new user-defined symbols do not look ideal for a seemingly simple task.

Example: https://github.com/mahaloz/decomp2gef/blob/main/decomp2gef.py#L247

Is it possible to have a feature/command where the user could add
symbols directly to GDB without the use of an objfile?

I brought it up with Simon Marchi, and he said the following:
> But off-hand, I don't see why this wouldn't be possible. Each objfile
> could have a list of user-defined symbols, that lookup_symbol_in_objfile
> would search in addition to the other regular methods.

Thank you,
Matthew Rinaldi