Reworking traits and fixing ammo skills on ranged weapons

[Infinity.2876]

Generally, arms is considered a weak trait line but there isn't really a clear way to change it. Additionally, rifle, shortbow, and offhand pistol are not very useful apart from Bladesworn.

So to improve these things I propose changing traits to trigger off of ammo skills specifically Crack Shot (triggering from weapon ammo skills) and vigorous shouts (triggering off of shout ammo skills) and then change bladesworn traits to work off of flow. This would allow for more build diversity.

There are several ways to do this.