Review COBie Facet support

[andyward]

The experimental COBie support only implements Attribute and EntityType facets. With these two facets it's possible to query any sheet (except Picklists) and Cell in a COBie model. However it may preclude more advanced cross sheet checks. (e.g. Components with certain Properties)

We should attempt to implement the following standard IDS facets against the COBieExpress schema:

• Classification - which has a Category analogue
• Properties - which should map to the Attributes sheet
• PartOf - which could be used for verifying spatial containment, Assemblies, Systems etc.

We could also look to extend the Entity facet to support checking based on IFC Type (rather than COBie Entity type). i.e. We know an IfcSensor should be a Component with ExternalObjectType of IfcSensor,

• Materials are unlikely to have a good map in COBie2.4.