I don't think that is possible, not right now anyway. Unless a code has been released for use in JgeckoU. But as far as I know, the save editor unlocks all 900 Korok seeds and all 900 locations, it gives you all 900, so you can collect your reward for collecting all 900. If you want to find them yourself, you can Google the korok seed locations. You will find a big map of BOTW with all 900 locations. I have the full strategy guide, so I know the map they uploaded online.