Added the unique skill “Savior”

The unique skill "Savior" has been added to Brighton. The holder of this skill will not have any ability reduced when carrying a friendly unit (including NPCs that are not adversaries).

Brighton was formerly a knight of Manster, but because of his background in deserting the army to save the citizens, I added this to his skill.

This skill has the same effect as Savior in FE9 and FE10; it is more powerful due to the heavy carrying penalty in FE5. It is most useful for carrying infantry and civilians in chapters 4-7. Also, in FE5, units can receive support effects from carried units. When Brighton is carrying Machyua, he can always fight while receiving support effects.

The skills with this name in FEH have the effect of fighting instead of nearby units, but it has no such effect in this time.