Add ISOModel stubs for Brian

[#47211625]
Put in simulate method

[#47211625]
Fix SWIG bindings

[#47211625]
Initial commit of the ISO SimModel [#47211625]
Make IDD changes required to support VRF systems.
Merge remote-tracking branch 'origin/develop' into 37281647-VRF
Add AirConditionerVariableRefrigerantFlow.

This is a partial implementation.  More details will be added in future
commits.
Merge remote-tracking branch 'origin/develop' into 37281647-VRF
Merge remote-tracking branch 'origin/develop' into 37281647-VRF
Fixed some simulation bugs.

Added UserModel loading from *.ISO file and creating SimModel
Added Main to SimModel to run
Make SimModel less public.
More rearranging to attempt to get unit tests to compile for namespace global functions.
Develop AirConditionerVariableRefrigerantFlow.
Add CoilCoolingDXVariableRefrigerantFlow
Add CoilHeatingDXVariableRefrigerantFlow.
Merge remote-tracking branch 'ORNL/AddModelObjectList' into 37281647-VRF
Develop Model objects related to VRF
Add osm->idf translator functions for VRF systems.
Merge branch 'develop' into RefrigerationPart2
Add 6 new refrigeration components to OpenStudio.idd

Adds these 6 new components:
Refrigeration:Condenser:EvaporativeCooled
Refrigeration:Condenser:WaterCooled
Refrigeration:Condenser:Cascade
Refrigeration:Subcooler
Refrigeration:SecondarySystem
Refrigeration:WalkIn