Feature/implement mit yaw

[paulf81]

First pass computing yaw loss the way discussed with MIke Howland

This pull request offers a first very hacky implementation of the method of computing yaw loss from the paper:

https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/modelling-the-induction-thrust-and-power-of-a-yawmisaligned-actuator-disk/3A34FC48A6BC52A78B6D221C13F4FC3A

I add a quick calculation of the "Version 1a" calculation of ct-prime and than power loss, assuming yaw doesn't impact ct-prime. I don't apply the cube so that, as with pP, the calculation can be applied to wind speed and accomodate above rated conditions.

I'm temporarily calling this the MIT method but that is just a place-holder name

Related issue

Issue #624

Impacted areas of the software

Additional supporting information

Most changes to turbine.py, but related changes to floris.py, floris_interface.py, solver.py

Test results, if applicable

Include a small example file examples/18b_test_mit_method.py, which gives the following plot, comparing the yaw loss with assuming default Pp behavior and showing similar behavior

[paulf81]

Moving to pull request #638 following updates in turbine.py following updates for floating/tilt (fyi @mhowlan3)

[paulf81]

Closing this one