Walk-up Experience for CSM user roles

Walk-up Experience roles for different users who interact with in-person support queues.

Role Name	Role	Description
sn_walkup.walkup_login	Store representative	Helps requester check in at the walk-up location.
sn_csm_walkup.walkup_technician	CSM walk-up technician	Fulfills user demands at the CSM walk-up location.
sn_csm_walkup.walkup_manager	CSM walk-up manager	Manages the team at the walk-up location.
sn_csm_walkup.walkup_admin	CSM walk-up administrator	Administers walk-up interactions, location queues, and walk-up reasons.