Add configurable limit for amount of dogs

[HeroGamers]

Feature suggested by DrewBairres on SpigotMC.

[HeroGamers]

70 “I want to set the maximum number of puppies per user rank.”

So I guess one could also add permissions for such things, to permit such usages.

For example, mydog.limit.10 or mydog.limit.20, etc.

[Bunnky]

This is something we're looking for as well.