feat(武器): 更新七魂武器效果并添加音效

- 添加攻击音效文件
- 修改七魂子弹生成逻辑，从7个改为6个并添加延迟
- 调整子弹生命周期和旋转动画
- 更新武器描述和属性
- 添加新的测试BOSS波浪数据

scripts/Contents/Weapons/SevenSoul.gd

@@ -2,9 +2,11 @@
 extends Weapon
 
 func attack(entity: EntityBase):
-	for i in 7:
+	playSound("attack")
+	for i in 6:
 		for j in BulletBase.generate(ComponentManager.getBullet("SevenSoul"), entity, entity.texture.global_position, 0):
 			j.index = i
+		await TickTool.millseconds(20000 / 6.0)
 func update(to, origin, _entity):
 	origin["atk"] += 1 * to * soulLevel
 	return origin