I don't think it's as simple as "run this one thing to package it", so if the process rather than the format is what you're looking for, this won't work, but that sounds a lot like how AppImages work from the user perspective. My understanding is that an AppImage is basically a static binary paired with a small filesystem image containing the "root" for the application (including the expected libraries under /usr/lib or wherever they belong). I don't line everything about the format, but overall it feels a lot less prescriptive than other "universal" packages like flatpak or snap, and the fact that you can easily extract it and pick out the pieces you want to repackage without needing any external tools (there are built-in flags on the binary like --appimage-extract) in helps a lot.