feat(子弹系统): 增强Parrier子弹和BigLaser效果

- 增加Parrier子弹的最大球数量和反射率
- 为Parrier子弹添加动画速度调整逻辑
- 重构BigLaser场景，添加动画资源和显示名称

scripts/Contents/Bullets/Parrier.gd

@@ -5,9 +5,9 @@ class_name ParrierBullet
 
 var parryiedTimes: int = 0
 var maxParryTimes: int = 1
-var maxBallCount: int = 3
+var maxBallCount: int = 5
 var atk: float = 1
-var reflectRate: float = 0.3
+var reflectRate: float = 1
 
 func spawn():
 	var varians = randi_range(0, 1)
@@ -47,6 +47,8 @@ func hitBullet(bullet: BulletBase): # 当前子弹与其他子弹相撞
 				bullet.baseDamage *= atk
 				bullet.baseDamage *= reflectRate
 				bullet.lifeTime *= 2
+				if bullet.freeAfterSpawn && bullet.autoSpawnAnimation:
+					bullet.animator.speed_scale *= 0.5
 			else:
 				bullet.tryDestroy()
 			var cycler = launcher.getOrCreateCycleTimer("parry", 2000, 100)