convert the bear to a basic mobster (#77143)

## About The Pull Request
the bear now a basic and he have a new behaviers. the bear now can go to
climbed the trees! he will looked for a tree to climbing and if he
founded a tree he will go climb him. also the bear now love honey he
will look for a bee hives to stole the honey from it so botanists must
be care. the bear will drag the honey behind him so u must chased him to
get the honey back again

## Why It's Good For The Game
the bear is a basic now so he and have more behavier for more depth
mechanis

## Changelog
🆑
refactor: the bear is a basic now. please report any bugs
add: the bear will climb trees and search honey
/🆑

code/datums/ai/basic_mobs/basic_subtrees/climb_tree.dm

@@ -0,0 +1,17 @@
+/datum/ai_planning_subtree/climb_trees
+	///chance to climb a tree
+	var/climb_chance = 35
+
+/datum/ai_planning_subtree/climb_trees/SelectBehaviors(datum/ai_controller/controller, seconds_per_tick)
+
+	if(!SPT_PROB(climb_chance, seconds_per_tick))
+		return
+
+	var/obj/structure/flora/tree/target = controller.blackboard[BB_CLIMBED_TREE]
+
+	if(QDELETED(target))
+		controller.queue_behavior(/datum/ai_behavior/find_and_set/valid_tree, BB_CLIMBED_TREE, /obj/structure/flora/tree)
+		return
+
+	controller.queue_behavior(/datum/ai_behavior/climb_tree, BB_CLIMBED_TREE)
+	return SUBTREE_RETURN_FINISH_PLANNING

code/datums/ai/basic_mobs/basic_subtrees/speech_subtree.dm

@@ -194,3 +194,8 @@
 	speech_chance = 5
 	speak = list("Gah Gah!", "NOOT NOOT!", "NOOT!", "Noot", "noot", "Prah!", "Grah!")
 	emote_hear = list("squawks", "gakkers")
+
+/datum/ai_planning_subtree/random_speech/bear
+	speech_chance = 5
+	emote_hear = list("rawrs.","grumbles.","grawls.", "stomps!")
+	emote_see = list("stares ferociously.")