[Indoor] Elevator proposal

[Tobias Knerr]

Hi all,

this proposal regarding elevator mapping is currently in RFC stage:

https://community.openstreetmap.org/t/108736
https://wiki.openstreetmap.org/wiki/Proposal:Elevator_dimensions

In addition to tags for elevator dimensions, it also describes various 
levels of details of elevator mapping and contains a tagging suggestion 
for mapping the outer and inner doors of elevators separately.

Yours,

Tobias