I am not understanding the file structure of a new modification package. Also there is no documentation for using said modification, As this is not fully implemented yet to FiveM Client.
Also to load the new style mods without development mode and be able to use the mod on public servers for release, CFX Team currently have to manually sign and review the mod package
Check here for updates on Client Addon Packages: the future
Check here for info on new Mod Library changes RFC: FiveM Mod Library