Version 1.1 - TACS and geometry parametrization

This version add an interface for TACS and an optional geometry parametrization for coupling.

Main changes

• TACS interface has been added in his repository. Ultimately, the interface should be moved in the official TACS repo. An example using this interface has been added.
• A feature has been implemented to add a geometry parametrization to take shape changes into account for flutter constraint.
• Required OpenMDAO version has been updated.

Note that the pipeline will fail because TACS is not built on the Docker image (see #1).