I seem to be struggling to set this up in my projects right now, and this is also roughly the only "extension" I have tried in a really long time. So...
No matter how I try to import this, at best, it creates an empty project without assets. It has one included file; ApolloHelp.html is the best I can manage, and this is because that was in the datafiles folder. Beyond this, I can fiddle around trying to create an extension and import all of the scripts, but I have no idea if I'm even doing any of it right, 'cause I have to import all the files one by one and I'm not sure if they're the right files, if they're out dated, wrong files, etc.
I've been able to figure out that I can import the .gml scripts into the extensions and it'll be able to find the functions per the extension editor, but not the .dll/.so. I'm further unsure if I've imported those properly or not, which I'm sure I'd need, I just have no idea if they're linked properly.
For context, I'm on Linux and using (currently) 2024.1100.0.713 Beta Runtime v2024.1100.0.726.
Anyway, TLDR I'm confused and I don't at all remember how to do any of this, and there doesn't seem to be any guide anywhere. (I mean, aside from just hit import or something.) But then it's still... Not working right. Even importing directly from the market place (where I purchased this some six years ago) all it manages to do is import only the .html file.