[NEW PORT] cad/ifcopenshell: Open source IFC library and geometry engine

IfcOpenShell is an open source (LGPL) software library for working with the
Industry Foundation Classes (IFC) file format. Currently supported IFC
releases are IFC2x3 TC1 and [IFC4 Add2 TC1].

PR: 243007
Reported by: chitty_cloud@me.com
Approved by: tcberner (mentor)
Differential Revision: https://reviews.freebsd.org/D24687