Carpy

Decoupled aerodynamic methods from procedural geometry methods in a huge library refactor. I also introduce constraints analysis in this update.

Hotfix:
Changed my mind on an implementation of constraints.
If anything is going to be up for the next few weeks as the latest version of CARPy, I'd prefer it was this.
Theory notebooks were incorrect for T/W derivation, and some notebook examples were added of the T/W derivation in use.

Atmosphere modelling fixes, more robust quantity handling, and wing geometry modelling.

Improved geometry and aerodynamic methods for wings, as well as other quality of life improvements.

Users can now model basic turbofans, turboprops, turbojets, piston-engined, and electric aircraft.

Refined some wing methods, added tests, and added documentation on usage.