feat(战斗系统): 实现弹反效果并调整相关参数

- 新增Parry效果控制器及关联资源
- 为EffectController添加beforeShot钩子方法
- 调整Parrier子弹的碰撞形状和动画时长
- 实现弹反成功时的击退效果和视觉反馈
- 修改默认波次配置用于测试

scripts/Statemachine/EffectController.gd

@@ -20,6 +20,7 @@ func _physics_process(_delta):
 	if lockTexture:
 		texture.global_rotation = 0
 func shot():
+	beforeShot()
 	var childParticle = particles.duplicate() as GPUParticles2D
 	childParticle.emitting = true
 	add_child(childParticle)
@@ -48,6 +49,8 @@ func shot():
 
 func register():
 	pass
+func beforeShot():
+	pass
 
 static func create(scene: PackedScene, spawnPosition: Vector2, parent: Node = null) -> EffectController:
 	var cloned = scene.instantiate() as EffectController