feat(战斗系统): 添加招架球子弹和循环计时器功能

实现新的招架球子弹类型(ParryBallBullet)及其相关行为
新增CycleTimer类用于管理子弹的周期性运动
在EntityBase中添加计时器管理功能，支持创建和应用周期计时器
添加招架球子弹的资源文件和相关配置

scripts/Contents/Bullets/Parrier.gd

@@ -10,3 +10,13 @@ func hitBullet(bullet: BulletBase):
 			eff.modulate = bullet.modulate.blend(bullet.texture.modulate)
 			eff.shot()
 			bullet.tryDestroy()
+			var cycler = launcher.getOrCreateCycleTimer("parry", 2000, 100)
+			if len(cycler.bullets) < 5:
+				for b in BulletBase.generate(
+					ComponentManager.getBullet("ParryBall"),
+					launcher,
+					position,
+					0
+				):
+					if b is ParryBallBullet:
+						pass

scripts/Contents/Bullets/ParryBall.gd

@@ -0,0 +1,11 @@
+extends BulletBase
+class_name ParryBallBullet
+
+var cycler: CycleTimer
+
+func spawn():
+	cycler = launcher.getOrCreateCycleTimer("parry")
+	cycler.host(self )
+func ai():
+	PresetBulletAI.selfRotate(self , 5)
+	hitbox.disabled = !launcher.sprinting

scripts/Contents/Bullets/ParryBall.gd.uid

@@ -0,0 +1 @@
+uid://6to3ptrfe6dr