Expose runway data via public API

[chssn]

It would be nice to have runway data exposed via the public API. For example, calling /sid/dependency yields something like:

  {
    "id": 75,
    "airfield": "EGGP",
    "runway_id": 75,
    "identifier": "REXAM2V",
    "departure_interval_group": null,
    "initial_altitude": 4000,
    "initial_heading": null,
    "handoff": 21,
    "prenotes": []
  }

It isn't possible to put a call into a /runway/{id} endpoint to get the runway designator (although EGGP isn't the most imaginative choice to pick for an example!)

[kristiankunc]

Is there a use case for this?

[chssn]

No specific use case, just seemed odd that runways weren't exposed where pretty much everything else static data wise is.