Adding WISDEM scripts and tabular data in excel format

[fzahle]

perhaps add a comment on the modelling options used in this setup:

• Model used to compute blade cross-sectional props, and to what degree the user should expect differences relative to the reference data in the yaml which is computed using BECAS.
• Rotor performance: with aeroelastic analysis or not and if so, with torsional deflection or not. this will strongly affect predicted steady state performance.