feat(角色): 添加猫头鹰角色MTY及其冲刺攻击能力

添加新角色MTY（猫头鹰）及其专属子弹MTYSprint
- 实现MTY角色的基本属性和AI行为
- 添加MTYSprint子弹类型及碰撞检测
- 在Wave.gd中添加MTY的生成配置
- 扩展BulletTool工具类添加查找最近子弹功能

scripts/Contents/Characters/MTY.gd

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+extends EntityBase
+class_name MTY
+
+func register():
+	fields[FieldStore.Entity.MAX_HEALTH] = 400
+	fields[FieldStore.Entity.MOVEMENT_SPEED] = 0.9
+	attackCooldownMap[0] = 1500
+	sprintMultiplier = 5
+func spawn():
+	BulletBase.generate(ComponentManager.getBullet("MTYSprint"), self, position, 0)
+func ai():
+	PresetEntityAI.follow(self, currentFocusedBoss)
+	tryAttack(0)
+func attack(type: int):
+	if type == 0:
+		trySprint()
+	return true
+func sprint():
+	var target = BulletTool.findClosetBulletCanDamage(position, get_tree(), self)
+	if is_instance_valid(target):
+		var dir = (target.position - position).rotated(MathTool.randc_from([-1, 1]) * deg_to_rad(90))
+		move(dir.normalized() * sprintMultiplier, true)

scripts/Contents/Characters/MTY.gd.uid

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+uid://b80jr04qpitly