New feature: Armor on /kits and space in the inventory

[Xm4g1kZzXj0k3]

Hi.
for now, when i use the command /createkit, the armor slot are not considered and space position in the inventory are ignored.

I think that can be a helpful get a kit with items in the same position of when i create it, and with the same armor/head.

Waiting the status update :)

Thanks for work.

[pop4959]

Closing in favor of #347