Import an IFC using the angle to true north to influence rotation

When an IFC is imported, its local coordinates are always lined up to project north. This is a problem, because some IFC files (i.e. from ArchiCAD) are already rotated such that grid north is orthogonal, not project north.

In Revit, there seems to be no way to influence the rotation of the imported IFC.

This has been mentioned before from web searches but with no solution:

- https://forums.autodesk.com/t5/revit-structure-forum/export-link-ifc/td-p/5817251
- https://forums.autodesk.com/t5/revit-architecture-forum/linking-ifc-rvt-files-into-projects-with-project-north-differing/td-p/8206106

Thoughts?

Start by reproducing the IFC import behavior in Revit with an ArchiCAD-originated file whose grid north differs from project north. Review the linked forum discussions and determine the expected rotation control; done should mean imported IFC geometry can use the IFC angle to true north rather than always aligning to project north.

Written by the indexing model from the issue text.