feat(武器): 添加酸蚀风暴武器及五种酸液子弹

实现酸蚀风暴武器系统，包含五种不同类型的酸液子弹：
1. 硫酸：命中时溅射1~3滴酸液
2. 硝酸：造成额外伤害
3. 盐酸：降低敌人移动和攻击速度
4. 碳酸：可无限穿透并逐渐扩大
5. 磷酸：增加敌人散射角

同时调整武器数值平衡，更新VSCode配置中的Godot引擎路径

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