Ah yes, IncludeBinary in a DataSection and load in with Catch*, files never touch the disk, no such functionally in AppGameKit I'm afraid
Although the syntax seems comparable they are very different things, look at the zip functions maybe you can code your own system but if your looking to load images to memory from imbedded resources, its not going to happen, unfortunately, WadPacker or a custom zip system is about the best we are going to get.
There are a few packer and sandbox type solutions out there and you could also use a SFX for basic protection.