Special spawn egg item texture

I was making a mod and I had a very interesting idea, you can add new mechanics. When using this function, you will not be able to select the color setting of the summoning eggs, but a new one will be available, you can choose your own texture, a menu will open to select the texture for the item. But it will be possible to choose which tab of the creative menu to place.

P/s/ I apologize for the mistakes in this text, because I don't know this language very well, and I even made the concept of the entity menu with this new function.