Hello there. 
This game is already in the WeMod library. You can see it here: NGU IDLE Cheats and Trainers for PC - WeMod.
But it does not have a trainer yet. This support article explains how to get trainers made: Game Queue & Boosts - WeMod Support.
In the meantime, there is a similar free-to-play idle game that we do have a trainer for. See this thread: Free To Play Games That Have WeMod Trainers.