refactor(武器系统): 重构Gobo武器行为并移除治疗导弹

删除HealingMissle相关文件，修改Gobo武器行为
Gobo现在会在受到伤害时生成苹果而非发射治疗导弹
更新武器描述和属性以匹配新行为
调整Rooster角色的武器配置

scripts/Contents/Weapons/Gobo.gd

@@ -4,10 +4,13 @@ extends Weapon
 func update(to: int, origin: Dictionary, _entity: EntityBase):
     origin["health"] += 5 * to * soulLevel
     origin["percent"] += 0.02 * to * soulLevel
+    origin["count"] *= to * soulLevel
     return origin
 func attack(entity: EntityBase):
     var gobo = entity.summon(ComponentManager.getSummon("Gobo"))
     if gobo is GoboSummon:
+        gobo.targetDamage = readStore("atk")
         gobo.percent = readStore("percent")
+        gobo.count = readStore("count")
         gobo.initHealth(readStore("health"))
     return true