Further coverage-related interpolation methods

[pebau]

In addition to the interpolation established via issue #245 also the further ones requested by the Coverages.SWG should be added. Here the motion copied:

• The Coverages SWG approves to request the OGC NA to add the following interpolation URLs to the OGC resolver under path https://www.opengis.net/def/interpolation/OGC/0/, based on ISO 19123-1 Annex B and the JSON schema below:
  • nearest-neighbour, linear, quadratic, cubic, lost area, barycentric
• Motion: Peter Baumann
• Second: Jerome St-Louis
• NOTUC

[pebau]

@ghobona seems I have not right to assign this issue, so mentioning you so that you get notice of it. Sorry for my illiteracy.