POI - add an airport dataset

[nlehuby]

Would it be ok to add the airport dataset from OpenFlight as a POI dataset ?

It is made available under the ODbL license, so I guess we will need to add a license file somewhere in our repo to explicit that.

[yohanboniface]

Sounds good.
Just make sure to add it under a /poi/ subfolder, so it's get tagged automatically as poi, and it can be skipped easily for those who don't have pois in their data.

Not sure about the license impact though. Maybe add a licence in the same folder as the dataset?

[nlehuby]

this is a worldwide dataset. Do I add a poi subfolder inside the world folder ? 😕

[yohanboniface]

I'd say yes :)

[nlehuby]

done in PR #29