Expand the CANSTAY permission by including an option to restrict non-hostile and hostile mobs from entering your claim.

Side note: Add an option to toggle whether or not named entities should be disregarded by these checks, and an option to whitelist specific mobs

Also add a permission that restricts any blocks inside your claim being destroyed by a creeper

reason why its prob not gonna be a thing:

1. too laggy since every mob would then need to check if they are in a claim and allowed to stay
2. disabling mob spawning and having a fence/wall does the same thing

also creeper explosion are toggled via explosion perm