feat: add pp cost

sonic-radiance.love/scenes/battlesystem/controllers/fighters/systems/actions/skill.lua

@@ -13,6 +13,7 @@ end
 function SkillAction:startAction()
   core.debug:print("cbs/action", "Starting flee action")
   self:loadChoregraphyFromSkill(self.data)
+  self.fighter:setPP(self.data.cost * -1, true)
 end
 
 return SkillAction

sonic-radiance.love/scenes/battlesystem/menus/widgets.lua

@@ -110,7 +110,7 @@ end
 
 function widgets.SkillWidget:sendCharacterData()
 
-  if self.skilldata ~= nil then
+  if (self.skilldata ~= nil and self.skilldata.cost <= self.character.abstract.pp) then
     self.assets.sfx["mSelect"]:play()
     self.character:useSkill(self.skillname)
   else