BlenderBIM support linked models auto false origin detection

[berndhahnebach]

• open a IFC2x3 which uses huge coordinates like LV95 (swiss coordinates)
• a Blender Offset will be automatically generated
• link another ifc from this project in BlenderBIM
• the Blender Offset will not be used, means the geometry is on real coordinates kilometer away from the first opened ifc
• thus

if a project has a Blender Offset linked models should use this offset. ATM they do not use it.

related: https://community.osarch.org/discussion/comment/20013/#Comment_20013

[berndhahnebach]

https://community.osarch.org/discussion/comment/20024/#Comment_20024 is described how a false origin for linked models can be given on file link (blend file has to be deleted).

But, if a model has been opened by Open Project all linked models should automatically use the BlenderOffset from the opened project as false origin. Means I left it open.