feat(Archicad): Add support for openings

[jozseflkiss]

Description & motivation

Support for Archicad Openings (#3267):

• Sending Archicad Openings to Speckle
  • openings are sent via the elements list of the parent element
  • only rectangular and circular openings can be handled by Archicad API
  • generating outline property for the common Speckle Opening class
• Receiving Archicad Openings from Speckle
  • Either from ArchicadOpening
  • or from Speckle Opening using the outline property
• Archicad to Revit workflow
  • rectangular openings can go through
• Revit to Archicad workflow
  • rectangular openings can go through (only rectangular openings are supported in Revit)

Changes:

Objects:

• ArchicadOpening has been introduced

C# Connector:

• Opening converters added

C++ add-on:

• GetOpening ommand and CreateOpening commands added

Screenshots:

Validation of changes:

Checklist:

• [x] My pull request follows the guidelines in the Contributing guide?
• [x] My pull request does not duplicate any other open Pull Requests for the same update/change?
• [x] My commits are related to the pull request and do not amend unrelated code or documentation.
• [x] My code follows a similar style to existing code.
• [x] I have added appropriate tests.
  • objects.pln has been updated with openings, I can provide it to you
• [ ] I have updated or added relevant documentation.