Plug-in function?

shame to admit I need cheat codes for most games…
and seems that function for official build is far from corner
I find several other builds, valentinvanelslande/Taken2009/etc
but all have some tiny problems annoy me, like performance problems/multiplayer problems/strange UI/cmd window background…
I wonder if it’s possible to compile some functions as plug-ins, like mod for games on Steam.
one can install plug-ins for new builds instead of waiting others to recompile
hope I have made my ideas clear…