Psydac change: renaming of GlobalPojector #108

There has been a renaming of GlobalProjector to GlobalGeometricProjector in pyccel/psydac#509.

This change is taken into account in struphy-hub/feectools#55.

The next is to adapt Struphy in a feature branch, and then use this branch in the psydac-for-struphy CI of the above branch to pass the tests.

Update: there have been also some other changes in Psydac, such as the introduction of FemLinearOperator. We will adapt to those changes now.