Implement BCF related topics

src/ifcblenderexport/blenderbim/__init__.py

@@ -35,6 +35,7 @@ if bpy is not None:
         operator.SelectType,
         operator.SelectBcfFile,
         operator.GetBcfTopics,
+        operator.ViewBcfTopic,
         operator.ActivateBcfViewpoint,
         operator.OpenBcfReferenceLink,
         operator.OpenBcfBimSnippetSchema,
@@ -113,6 +114,7 @@ if bpy is not None:
         prop.BcfTopicLabel,
         prop.BcfTopicLink,
         prop.BcfTopicDocumentReference,
+        prop.BcfTopicRelatedTopic,
         prop.Subcontext,
         prop.BIMProperties,
         prop.BCFProperties,