refactor: Move existing VTK filter and PV plugin SurfaceGeomechanics to appropriate folders #131
Description
In the context of repository refactoring, this tasks will consists in moving the existing SurfaceGeomechanics vtk filter to geos-processing and the PV plugin PVSurfaceGeomechanicsto geos-pv.
This work will also include code refactoring, allowing a better maintainance and avoid duplicate. The VTK filter will be called in the PV plugin more easily by the addition of an applyFilter function.