brigand sapper skin mod 0.5

<code>还没有测试，
添加了弹药包不过没有动画，
动画做了再和之前的两个打包发布正式版吧。</code>

把里面的monsters放进魔物娘mod里

It hasn't been tested yet,

Added brigand_barrel  but no animation, release the 1.0  version after the animation is made.

Unpack the monsters and put them into the Monster Girl mod