(continuation from pull request 68)
It would be nice if other mods / plugin mod can:

• restrict the use of attach tools (ex: can't attach engines)
• change behavior of attach tools (ex: consume a resource when attach/detach)
• add specials attach tools (ex: can attach parts if they didn't have LiquidFuel inside)

I didn't find a way to do that, even with KIS v1.2.1

I found a way, by adding some method inside in ModuleKISItemAttachTool and calling it from KISAddonPickup and KISAddonPointer (cf pull request n°82).