fix(Archicad): Receive slowed down in Archicad 26

[jozseflkiss]

Description & motivation

https://spockle.atlassian.net/browse/CNX-8760

Changes:

It seems that Archciad 26 has a bug. When e.g. passing %lf to GS::String::SPrintf, it does not iterate on all the format specifier options available for both double and float, just takes the first one, which in this case is %f. After that it compares the sizes: %f --> float (4 bytes), the passed argument was double (8 bytes). This size mismatch creates a log entry in the log file which takes so much time per vertex of a mesh being imported.
In Archicad 27 this seems to be solved.
Since the string representation of the vertex written into GDL was not and should not be so precise (enough to have 8 digits), the fix is to cast the parameters to float-s.

Checklist:

• My pull request follows the guidelines in the Contributing guide?
• My pull request does not duplicate any other open Pull Requests for the same update/change?
• My commits are related to the pull request and do not amend unrelated code or documentation.
• My code follows a similar style to existing code.
• I have added appropriate tests.
• I have updated or added relevant documentation.

[jozseflkiss]

@AlanRynne Bulk of the changes are formatting, and be able to build the add-on with debug version of Archicad.

[AlanRynne]

I'll trust you on the c++ side... we'll give it a good test