Cleaned up and commented out the sailing code. Added custom editors for all the sailing scripts.
Rework of the Submarine and Sink components. Both are now just VariableCenterOfMass MassAffectors, meaning they act as variable weight/ballast attached to the ship.
Transform position of the Sink component itself now determines the center of mass offset point / point of water ingress.
Submarine depth input now changes the relative depth instead of setting the absolute depth value. This means that negative input means deeper, positive input means shallower.