Support for General Purpose Grid aka GPGrid #110
Description
Is your feature request related to a problem? Please describe.
GP Grid exists in RESQML but not in Fesapi
Describe the solution you'd like
I woudl like a support of GPGrid in Fesapi
Describe alternatives you've considered
None
Additional context
See https://discourse.f2i-consulting.com/t/gp-grid-representation/133