Couple to Kynema for ALM and templatize existing OpenFAST interface

[mbkuhn]

Summary

Needed to implement coupling with Kynema as an aero + turbine model. To avoid duplicating code and to ensure I was doing the right things, I templated the existing OpenFAST interface and made the Kynema interface another specialization of that template. Kynema does a lot less "under the hood" compared to OpenFAST, especially for initialization, so the template specialization is much more involved. The *Iface.cpp and *_types.H files are the main ones that have to be changed depending on the template; the others are simpler and mostly for instantiation.

Pull request type

Please check the type of change introduced:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

Checklist

The following is included:

• new unit-test(s)
• new regression test(s)
• documentation for new capability

This PR was tested by running:

• the unit tests
  • on GPU
  • on CPU
• the regression tests
  • on GPU
  • on CPU

Additional background

Issue Number:

[mbkuhn]

At this point, the templates for OpenFAST are basically done, though they will probably be tweaked later in the process. Both act_uniform_alm reg tests pass!