[REQUEST] Implement geodetic transformation functionality

[pjanck]

Is your feature request related to a problem? Please describe. This paper (the free download is valid only until 13th October 2020, so download promptly) describes transformation between different coordinate reference systems which could be applied to BIM models. See especially point 6 of conclusions.

Describe the solution you'd like Implement a transformation capability in OIP using any of the named libraries (Proj.4, GDAL, ...). If a better-suited library is found, please propose & discuss it here.

To implement, the following steps are probably necessary:

• [ ] provide an automatic download of the library using CMake
• [ ] link & include the library of choice in the solution
• [ ] read the EPSG code from the IFC file
• [ ] enable the user to specify which other EPSG code he wants IFC data to be transformed to
• [ ] transform each point of the resulting tessellated geometry in IfcGeometryModel
• [ ] save the newly created model in a new IFC file

Additional context A reference implementation would be QGIS, for example.