Vispack restructuring (part 5, small changes and new example files)

examples/scripts/tu_delft_wing_design.py

examples/scripts/tu_delft_wing_design/(X)DSM/FPG_IDF.pdf

examples/scripts/tu_delft_wing_design/(X)DSM/FPG_MDF-GS.pdf

examples/scripts/tu_delft_wing_design/(X)DSM/FPG_MDF-J.pdf

...ipts/tu_delft_wing_design/(X)DSM/FPG_converged-DOE-GS.pdf

...ripts/tu_delft_wing_design/(X)DSM/FPG_converged-DOE-J.pdf

...ipts/tu_delft_wing_design/(X)DSM/FPG_converged-MDA-GS.pdf

...ripts/tu_delft_wing_design/(X)DSM/FPG_converged-MDA-J.pdf

...ts/tu_delft_wing_design/(X)DSM/FPG_unconverged-DOE-GS.pdf

...pts/tu_delft_wing_design/(X)DSM/FPG_unconverged-DOE-J.pdf

...ts/tu_delft_wing_design/(X)DSM/FPG_unconverged-MDA-GS.pdf

...pts/tu_delft_wing_design/(X)DSM/FPG_unconverged-MDA-J.pdf

...ts/tu_delft_wing_design/(X)DSM/FPG_unconverged-OPT-GS.pdf

...pts/tu_delft_wing_design/(X)DSM/FPG_unconverged-OPT-J.pdf

examples/scripts/tu_delft_wing_design/(X)DSM/RCG.pdf

examples/scripts/tu_delft_wing_design/(X)DSM/XDSM_IDF.pdf

examples/scripts/tu_delft_wing_design/(X)DSM/XDSM_MDF-GS.pdf

examples/scripts/tu_delft_wing_design/(X)DSM/XDSM_MDF-J.pdf

...pts/tu_delft_wing_design/(X)DSM/XDSM_converged-DOE-GS.pdf

...ipts/tu_delft_wing_design/(X)DSM/XDSM_converged-DOE-J.pdf