feat(子弹系统): 添加扫帚系列子弹及相关资源

添加扫帚子弹、扫帚炮和扫帚回旋镖三种新子弹类型
包含子弹脚本、音效、动画和特效资源
修改EnergyBlock实体以支持新子弹的攻击逻辑
更新子弹基类添加销毁信号

scripts/Statemachine/BulletBase.gd

@@ -10,6 +10,8 @@ enum MotionType {
 	BREATH, # 吐息
 }
 
+signal destroied(becauseMap: bool)
+
 @export var displayName: String = "未知子弹"
 @export var speed: float = 10.0
 @export var baseDamage: float = 10.0
@@ -188,6 +190,7 @@ func tryDestroy(becauseMap: bool = false):
 	if autoDestroyAnimation:
 		animator.play("destroy")
 		await animator.animation_finished
+	destroied.emit(becauseMap)
 	queue_free()
 func trySplit():
 	if is_instance_valid(launcher) and canDuplicateSelf: