[Tagging] Charging stations for commercial vehicles etc

[Tijmen Stam]

For cars there is amenity=charging_station that allow one to plug in a 
cable.

But in the Netherlands (and other places in Europe) there are now 
charging stations for buses that are so specific that they will probably 
not be used by vehicles other than the operator's, but maybe soon there 
will be public stations like these as well for trucks.

Examples:
Fast charger on the public road
<https://www.ovpro.nl/wp-content/uploads/2016/11/Linkker.jpg>

Rows of "slow chargers" on a bus depot
<https://media.wbn.nl/2018/03/elektrischebus-laadstationschiphol_WijNoordHolland.nl_WBN.jpg>

How should we tag those?
Even though their use for now is mostly proprietary, they are quite 
notable in the street.

I myself are for a subset of amenity=charging_station / bus=yes / 
access=private

However, the <socket:type> is a misnomer, as there is no "socket" like 
the common Tesla and ChaDeMo types.

Any suggestions?

Tijmen/IIVQ