Function convertEntityType

convertEntityType(
    entityType: string,
    fromSchema: IfcSchemaVersion,
    toSchema: IfcSchemaVersion,
): string
Convert an entity type name from one IFC schema version to another.
Parameters
- entityType: string
  UPPERCASE entity type name (e.g., 'IFCWALL')
- fromSchema: IfcSchemaVersion
  Source schema version
- toSchema: IfcSchemaVersion
  Target schema version
Returns string
The mapped entity type name, or the original if no mapping needed