ESRI VectorTileLayer support

[klokan]

Add an endpoint for using the vector tiles directly in ESRI products.
https://doc.arcgis.com/en/arcgis-online/reference/vector-tile-layers.htm

[klokan]

Viewer:
https://developers.arcgis.com/javascript/latest/sample-code/layers-vectortilelayer/index.html

Notes:
ESRI sample base maps:
http://www.arcgis.com/home/group.html?id=30de8da907d240a0bccd5ad3ff25ef4a&focus=layers
for example:
http://www.arcgis.com/home/item.html?id=2e063e709e3446459f8538ed6743f879
using JSON style:
http://www.arcgis.com/sharing/rest/content/items/2e063e709e3446459f8538ed6743f879/resources/styles/root.json?f=pjson

links an ESRI specific tileserver capabilities JSON:
https://basemaps.arcgis.com/b2/arcgis/rest/services/World_Basemap/VectorTileServer

[klokan]

Relevant docs:
http://proceedings.esri.com/library/userconf/fed16/papers/fed_85.pdf
http://proceedings.esri.com/library/userconf/fed17/papers/fed_53.pdf
http://proceedings.esri.com/library/userconf/fed17/index.html

http://www.esri.com/videos/watch?videoid=5015&isLegacy=true&title=vector-tiles-in-the-arcgis-platform

Official Refrence:
http://pro.arcgis.com/en/pro-app/help/mapping/map-authoring/author-a-map-for-vector-tile-creation.htm
http://pro.arcgis.com/en/pro-app/tool-reference/data-management/create-vector-tile-package.htm

Style editor:
http://esri.github.io/arcgis-vectortile-style-editor/
https://github.com/Esri/arcgis-vectortile-style-editor

Esri/mapbox-gl-js#1
https://gist.github.com/odoe/ce6a150658526901ef27
https://github.com/Esri/esri-leaflet-vector

https://klokantech.github.io/esri-offline-vectortiles/
https://github.com/klokantech/esri-offline-vectortiles

[sequel63]

Just wondering if this is ever likely to happen?
Maptiler vector tiles in Arc would be really great!