Support Arraying

[theoryshaw]

• https://github.com/buildingSMART/NextGen-IFC/issues/84
• https://community.osarch.org/discussion/213/
• https://community.osarch.org/discussion/721/beam-systems
• https://forum.freecadweb.org/viewtopic.php?f=39&t=50085
• https://github.com/brunopostle/homemaker-addon/issues/25
• https://community.osarch.org/discussion/1185/

[theoryshaw]

caught in the wild: https://github.com/IfcOpenShell/IfcOpenShell/commit/62229b032ec708d2753c33fda787d13a653b490c