Allow specifying commands that are run on-kit-claim

also for future features, would it be possible to add commands to kits?
so when a player claims a kit, specified commands are ran to give players certain stuff or perms

https://discord.com/channels/513219024927326211/867897923178201138/1105999190443708456

todo @John-Paul-R: ping on discord when this is implemented (additional requester)

https://discord.com/channels/513219024927326211/867897923178201138/1151273545586978918