Allow entities to eat other entities of the same species when desperate

[dmccoystephenson]

This task focuses on implementing a behavior where entities can resort to cannibalism during extreme starvation. When an entity reaches a desperate state and cannot find other food sources, it will be permitted to consume members of its own species.

To enhance realism and better reflect natural survival strategies, this feature introduces extreme coping mechanisms in response to food scarcity. Additionally, the behavior may be restricted to meat-eating entities, ensuring that only carnivorous or omnivorous species exhibit this behavior.