basic ice whelps (#77493)

## About The Pull Request
i have refactored ice whelps into basic mobs. They are now the artistic
sort as theyll mark their territory by seeking out icy rocks and carve
out statues of theirselves using their claws to serve as a warning to
players/animals that this is dragon turf and theyll also go out of their
way to burn any trees in vicinity just for the hell of it. they are now
gruesome cannibals if they find a corpse of one of their kin near them
theyll go eat it for nurishment. AS for combat, they have a new ability
which allows them to release fire in all directions however theyll only
use this ability once their enraged meter is full. to make it fair ive
given them a new component which allows them to telegraph abilities and
only do them after a delay so players can react in time for it.

## Why It's Good For The Game
basic mob refactor

## Changelog
🆑
refactor: ice whelps have been refactored to basic mobs
add: ice whelps have a new dangerous ability which theyll use once their
enraged meter is full
/🆑

code/datums/ai/basic_mobs/basic_ai_behaviors/targeted_mob_ability.dm

@@ -5,7 +5,7 @@
 /datum/ai_behavior/targeted_mob_ability
 
 /datum/ai_behavior/targeted_mob_ability/perform(seconds_per_tick, datum/ai_controller/controller, ability_key, target_key)
-	var/datum/action/cooldown/ability = controller.blackboard[ability_key]
+	var/datum/action/cooldown/ability = get_ability_to_use(controller, ability_key)
 	var/mob/living/target = controller.blackboard[target_key]
 	if(QDELETED(ability) || QDELETED(target))
 		finish_action(controller, FALSE, ability_key, target_key)
@@ -26,6 +26,9 @@
 	if(living_target.stat >= UNCONSCIOUS)
 		controller.clear_blackboard_key(target_key)
 
+/datum/ai_behavior/targeted_mob_ability/proc/get_ability_to_use(datum/ai_controller/controller, ability_key)
+	return controller.blackboard[ability_key]
+
 /**
  * # Try Mob Ability and plan execute
  * Attempts to use a mob's cooldown ability on a target and then move the target into a special target blackboard datum