Improved definitions for IfcRoleEnum

Are there ISO standards (perhaps 10303-41 which I don't have access to, but originally defined organization_role and person_role) which gives better definitions for the types of roles?

Right now the descriptions are just copy paste of the enum values.

Start by locating the IfcRoleEnum definitions and reviewing ISO 10303-41, especially organization_role and person_role. Determine whether authoritative role definitions can be sourced, then update the enum descriptions so they provide more than the copied enum values and verify the specification wording is consistent.

Written by the indexing model from the issue text.