Graphics defining turbine reference coordinate systems and other conventions

[fzahle]

For the docs it could be really instructive to create plots / schematics that define all relevant coordinate systems in windIO. For the turbine this could be:

• the ground coordinate system,
• blade coordinate system,
• local cross-section coordinate system,
• Definition of tilt and cone,

In the docs for the blade structure there are currently some nice plots to explain how structure is parameterised. @ptrbortolotti do you have the python scripts you made to generate these? For the updated internal structure definition I could base the plots on what you already have. Maybe we can host the plotting scripts in this repo in e.g. docs/utils or something.

[ptrbortolotti]

I generated these images in 2020 in no less than powerpoint. Here the slides:

ontology.pptx