add character management system
Define header file
Add FightSystem.cpp file
Merge remote-tracking branch 'origin/CharacterManageSystem' into FightSystem
FightSystem needs CharacterManageSystem header
Add judgeAttack which needs to call gotAttacked(id, damage) in CharacterManageSystem
merge & 增加UI血量  & TAB鍵切換角色
Fix angle and attack radius bug.
修正 被打動畫未撥放