ETABS_Toolkit: LoadingPanelProperty not supported

[maryannewachter]

Description:

Cannot push null panels using LoadingPanelProperty to apply arbitrary area loads. LoadingPanelProperty appears in the ETABS Adapter CRUD SurfaceProperty.cs

Steps to reproduce:

Create panel with LoadingPanelProperty and push to ETABS.

Expected behaviour:

Allow for pushing panels with no material assigned to create area loads.

Test file(s):

https://burohappold.sharepoint.com/:f:/r/sites/BHoM/02_Current/12_Scripts/01_Test%20Scripts/ETABS_Toolkit/Issue327-LoadingPanelPropertyNotSupported?csf=1&web=1&e=x0T3mK