Move package to @mapbox namespace.

package.json

@@ -1,5 +1,5 @@
 {
-  "name": "mapbox-gl-native",
+  "name": "@mapbox/mapbox-gl-native",
   "version": "3.4.2",
   "description": "Renders map tiles with Mapbox GL",
   "keywords": [
@@ -49,4 +49,4 @@
     "remote_path": "./{name}/v{version}",
     "package_name": "{node_abi}-{platform}-{arch}.tar.gz"
   }
-}
+}