Hello Craftian, I actually was asking about this very thing on your ezPG page.
Wabbajack does not let us use itch.io as a source for mods to include it in a list so the only way to currently include your mods is to inline it (integrate the mod into the wabbajack install file itself), which is viable as long as you're open to that. It just makes the wabbajack install file a bit larger in size which is not a big deal.
The alternative is if you were to upload your mod files to a site like mediafire as well, and then we can submit a request to wabbajack to use that as a source going forward.