Add emergency=access_point preset and map style

[majkaz]

Add preset and map style for emergency=access_point, similar to highway=emergency_access_point
​https://wiki.openstreetmap.org/wiki/Tag:emergency%3Daccess_point

In Czechia, there is a consensus to use the emergency=access_point variant for the emergency points. The reason for it: many emergency access points are not accessible by road, just by helicopter (marking places, where a heli can land), and the highway tag doesn't make sense there.

Attached is the diff for the current elemstyles.mapcss and the preset.

[Don-vip]

Replying to majkaz:

reason for it: many emergency access points are not accessible by road, just by helicopter (marking places, where a heli can land), and the highway tag doesn't make sense there.

That's a very good reason. Would you (or someone else) mind to create a proposal to deprecate the highway tag, to see if we can reach a global consensus? I don't think we would face many objections.

[Klumbumbus]

Taghistory:

[Klumbumbus]

I too would prefer if there would be a proposal first which deprecates highway=emergency_access_point. Usually we don't add different presets for the same thing in JOSM.