long term grand plan

[calbaker]

• make an enum like:

  pub enum ScalingStyle {
      /// Min -> Max values are all scaled
      ScaleAll,
      /// Values are scaled proportionally so that min stays anchored when setting max or vice versa
      ScaleProportionally,
      /// Values are all scaled by same absolute amount
      Slide
  }
  fn set_min(&mut self, style: ScalingStyle) -> anyhow::Result<()> { ...}

• make a new crate that both ALTRIOS and FASTSim-3 have as a dependency so that all the commonality can be in one place
• implement TrackedState and TrackedStateWithMemory in the above new crate so that state mutations, if expected, are guarnteed