On a mac, want to turn a folder into a .gma and upload it to the workshop.

I’m using a mac, and I want to convert an addon I made to a .gma and upload it to the workshop… how do I do that?

I found here that the Garry’s Mod Workshop Publisher tool / Workshopper doesn’t work anymore, and that I have to use programs called GMad and GMpublish to create and upload addons. It says that these programs come with Garry’s Mod and are in the common/GarrysMod/bin folder, but I couldn’t find them. I assume that “gmad.exe” would be gmad.osx, but after reinstalling Garry’s Mod twice and after several searches of my computer I couldn’t find either programs. And i’m also not sure how to use command lines… please help??