new wizard ability and basic leaper refactor (#79237)

## About The Pull Request
refactors leapers into basic mobs and adds a new ability for wizards.
for 2 points wizards can buy their own leaper pet. they will get a
contract which lets them pick their pet's name and color

![thefrogs](https://github.com/tgstation/tgstation/assets/138636438/8df9b893-d07d-4e51-a9fa-644830cc7a81)

after they sign the contract they will get a frog statue which is used
to contain the leaper. players can use this statue to release or recall
the leaper into the statue. when its in the statue it will slowly regain
health or even revive from the dead, but if it gets gibbed then the
statue will be useless.

also adds a new ai behavior for leapers which lets them go swim in water
(and splash around) for a period of time. i gave this behavior to frogs
and crabs too

when riding the leaper, the players will get access to all its
abilities, it now has new abilities, it can create frog minions that
suicide bomb the enemies and it can also create a shower of poisonous
structures.


https://github.com/tgstation/tgstation/assets/138636438/931aa7b4-09f0-493f-bdb6-f3bdd0915b22

also when riding the leaper, players can point at walls near it so it
will destroy it. alternatively players can give commands to their
leapers to use abilities and to follow them if they are not riding it.
wizards cant be force dismounted from their frogs, and only wizards can
ride the frogs.

this also removes leapers from cytology as they now are much more
dangerous and have a new home


## Why It's Good For The Game
refactors leapers into basic mobs, and gives more gameplay opportunities
for wizards
## Changelog
🆑
refactor: leapers have been refactored into basic mobs please report any
bugs
add: wizards can now summon a leaper pet
removal: removes leapers from cytology
/🆑

code/datums/components/pet_commands/pet_commands_basic.dm

@@ -98,6 +98,22 @@
 	parent.emote("spin")
 	return SUBTREE_RETURN_FINISH_PLANNING
 
+/**
+ * # Pet Command: Use ability
+ * Use an an ability that does not require any targets
+ */
+/datum/pet_command/untargetted_ability
+	///untargetted ability we will use
+	var/ability_key
+
+/datum/pet_command/untargetted_ability/execute_action(datum/ai_controller/controller)
+	var/datum/action/cooldown/ability = controller.blackboard[ability_key]
+	if(!ability?.IsAvailable())
+		return
+	controller.queue_behavior(/datum/ai_behavior/use_mob_ability, ability_key)
+	controller.clear_blackboard_key(BB_ACTIVE_PET_COMMAND)
+	return SUBTREE_RETURN_FINISH_PLANNING
+
 /**
  * # Pet Command: Attack
  * Tells a pet to chase and bite the next thing you point at