feat: Python class meta-programming for State construction

[kyle-cochran]

This MR is some Python-only syntactic sugar on top of the State Builder concept which allows for some nice syntax:

MySuperFunState: type = State.template(
    frame,
    [CartesianPosition.default(), CartesianVelocity.default()],
)

states: MySuperFunState = [
    MySuperFunState(instant,coords) for instant,coords in zip(instants, coordinates)
]

The output StateTypeX classes are polymorphic to State and so can be used anywhere a State can.
This example is 100% equivalent to using a builder and is just a syntax alternative.

(other meta-programming features like auto-assigning state.mass to get the mass value will be in a follow-up)

[vishwa2710]

LGTM!
It's gonna be sick when we add the custom kwargs and getters 🥳

[codecov]

Codecov Report

Merging #244 (98d9016) into main (e93ad85) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #244      +/-   ##
==========================================
+ Coverage   83.23%   83.27%   +0.04%     
==========================================
  Files          63       63              
  Lines        4874     4886      +12     
==========================================
+ Hits         4057     4069      +12     
  Misses        817      817              

Files	Coverage Δ
...penSpaceToolkit/Astrodynamics/Trajectory/State.cpp	100.00% <100.00%> (ø)

[phc1990]

I wonder whether we can achieve this by using bindings directly and not Python code 🤔
I just dont' know