Increase blood bag flow rate for basic medical

[PabstMirror]

• Increase flow rate for basic medical (41ml/sec in an arm vein probably doesn't feel great 😄 )
• Don't queue bags - (2 bags flow twice as fast, instead of just doubling the total to add)

Uses a single unit variable QGVAR(ivBags) to hold all bag info.
We can skip calculations and syncing if the value is nil (no bags) which should be the common case.

[thojkooi]

This PR removes the seperate lists for blood, plasma and saline. I think we still want to keep track of the types of IV that are providing the regen. It does not matter for basic, but could matter a lot for advanced medical in the near future.

[PabstMirror]

In fnc_treatmentIVLocal:

_bloodBags pushBack [_volumeAdded]; // Future BagType: [_volumeAdded, _typeOf]

I was thinking in the future the ivBags array would hold arrays with the volume and type when we had a use for it. This lets us just check a single variable for speed, but we can still have all the info if we need it.