Merge pull request #259 from specklesystems/revit-levels

feat(objects): adds level to revitobject

src/Speckle.Objects/Data/RevitObject.cs

@@ -12,6 +12,13 @@ public class RevitObject : DataObject, IRevitObject
   public required string family { get; set; }
   public required string category { get; set; }
 
+  /// <summary>
+  /// The level constraint of the object.
+  /// For objects constrained by multiple levels, this represents the base constraint.
+  /// For objects with no level constraint, this should be null.
+  /// </summary>
+  public required string? level { get; set; }
+
   /// <summary>
   /// A Curve or Point object representing the location of a Revit element.
   /// </summary>