fraction_t: semantically represents a value 0.0-1.0. Internally this is
represented as a uint8 with 255 being 1 and 0 being 0.

ratio_t: represents a fracitonal number that can be larger than 1.0.

No longer hammering the SPI bus, but rather being more controlled, and
interpolation is handled better.

Formalize a poor-man's Parameter "typeclass" and create "instances".
This makes things way less ad-hoc.

more robust.

This server allows the user to control the parameters of the state for
displaying the lights.

This helps by creating one location to add state parameters.

This adds a mini shell to the tcp server that allows the user
to modify the current state.

Commands are in the form:

  set [int_attribute] (=|+=|-=) [number]
  set [bool_attribute] (on|off|toggle)
  print
  end

for example:

  set brightness += 5
  set power on
  print
  end

There is still definitely some jenk to it. For one I still
need to figure out how to protect critical sections to prevent stutter.

I do need to set up a timer to control the time incrementer rather than
depending on the speed of the spi bus.