I think this was overengineered and a bad decision. RASTER is a
technical detail, not a semantic label (in contrast with whether it's a
title or a drawing).
I guess after all it's not very reliable idea since it's possible to have a cost schedule without quantities (even non-SoR) and it's giving users false assumptions that they don't need to worry about "Is Schedule of Rates" flag in some cases.
Previously code wasn't shared and duplication was reimplemented in an
incomplete way. Now it's shared which means that it's also more
sophisticated (i.e. does all the linked aggregate magic).
Also the duplicate code seems super complicated especially with arrays
and linked aggregates. Moving it into a tool makes it more reusable and
we can test it more granularly in the future.
Historically we overrode the operator, so we had to reinvent native
functionality. Now we only override the hotkey, so we can reuse native
functionality. This also means that things we failed to reinvent like
duplicating unlinked animation data now works properly. This bit me when
I was doing animation work and Bonsai's duplicate messed things up.
E.g. if you would call this operator for 1 specific cost schedule, Blender would remember it's value and would keep on using it even if operator is going to be called outside this schedule
Mentioned in #6545
Override filename to be always empty, so user won't have an expectation that csvs will be saved as a single file (currently they're always saved to a directory).
To prevent confusion with 'Hierarchy' column that's added on the export and make current and export compatible.
Indices now always start from 1 for consistency.
Previously it was saved using Windows 1252 and importing it would fail with an error like so:
```
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x92 in position 650: invalid start byte
```
Because apparently it's not invalid IFC.
IfcStructuralPointConnection documentation says that they should have a topology representation with a IfcVertexPoint but it doesn't restict this representation from having Undefined type if it does have a IfcVertexPoint as it's item.