Add applied multioutput regression example

[ethantenison]

It would be really helpful to include an applied example. It's a struggle to convert these simulated problems to the real world.

[fmder]

Sure, can you submit a pull request? I'll try to review it rapidly

[ethantenison]

Just submitted a pull request using your NSGA3 example with some notes and mock data. It would be incredible to see how you go from an array of known outputs to the optimal/pareto points.