refactor(武器系统): 重构VectorStar武器和子弹逻辑

调整VectorStar子弹的移动逻辑，移除forwarded变量并优化速度计算
修改VectorStar武器的属性计算公式，调整基础值和成长系数
更新VectorStar场景配置，调整攻击力、冷却时间等参数
将Rooster角色的默认武器替换为VectorStar

scripts/Contents/Bullets/VectorStar.gd

@@ -12,9 +12,7 @@ func ai():
 	PresetBulletAI.forward(self, rotation)
 	if timeLived() <= forwardTime:
 		speed = 10 * ((forwardTime - timeLived()) / forwardTime)
-	elif forwarded:
-		speed = (timeLived() - forwardTime) / 30
 	else:
-		forwarded = true
+		speed = (timeLived() - forwardTime) / 30
 		if is_instance_valid(tracer):
 			rotation = position.angle_to_point(tracer.getTrackingAnchor())