Crossbow Quality of Life

Having done some Crossbow now, here's my ideas on how to make it play a little better:

1) An (optional) alternative control scheme for crossbow skills that lets them fire when the skill button is pressed rather than being triggered by the generic fire crossbow button. Yes that does mean you lose out on the manual reload, but using multiple different ammo types would feel *much* nicer if you all you had to do was press the button for the other ammo type to actually *fire* it.

2) Just as with reviving minions, let all crossbow ammo reload automatically if the player has not used them and been hit for x seconds.

3) Add a dedicated Reload button (as with the dedicated command minions button) that, when pressed, reloads the current ammo. When held, it should do a longer animation and reload *all* ammo types.

Those changes would get rid of the hitches in the playstyles that use multiple different crossbow ammo types and just make it feel a lot better.

+1, also, switching ammo should reload the crossbow entirely.