feat: add buttons to force melee respawn/dig

[cboar]

These buttons helped me learn how to handle a melee respawn or dig, without having to wait or rely on RNG.

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[dereklopes]

These are cool, but I think this would be better as a context menu option on the respective mobs rather than a side menu option. That would make it more consistent with the other "behavior altering" features like the Zuk healers spawn.