Changes to List all user roles and permissions in an organization

added the new service_account enum value to the user/role response property for the response status 200

added the optional property userWorkspaces/items/participantId to the response with the 200 status

added the optional property user/userType to the response with the 200 status

the response property user/avatar became nullable for the status 200

the response property user/firstName became nullable for the status 200

the response property user/lastName became nullable for the status 200

added the non-success response with the status 404

endpoint added