Added the unique skill “Gutsy”

The unique skill "Gutsy" has been added to Lakche. Holders of this skill will not lose their Hit, Avo, and Attack Speed even when Tired state.

The name of this skill is a reference to Super Robot Wars. Initially, the effect was set to mimic Super Robot Wars, "Hit/Avo +30 when HP is less than half", but it didn't work well with the fatigue system and didn't make much sense. So I changed the effect to be unaffected by fatigue. Lakche came from a world without fatigue, I think its effects are convincing to some extent.

Needless to say, its effect on breaking one of the rules of the game is powerful, but fatigue cannot be completely ignored, as the reduction in Mov cannot be prevented.