Configure hillshading layer

- full attribution
- i18n key
- paint property defaults as template

js/LayersConfig.js

@@ -244,9 +244,7 @@ BR.LayersConfig = L.Class.extend({
         return new leafletOsmNotes();
     },
 
-    createMvtLayer: function (props) {
-        const options = {};
-
+    createMvtLayer: function (props, options) {
         if (props.url in BR.layerIndex) {
             // url is key to style in local layers bundle (file name without '.json'),
             // suggested file naming convention: `<layer id>-style.json`
@@ -346,7 +344,7 @@ BR.LayersConfig = L.Class.extend({
         } else if (props.dataSource === 'OpenStreetMapNotesAPI') {
             layer = this.createOpenStreetMapNotesLayer();
         } else if (props.type === 'mvt') {
-            layer = this.createMvtLayer(props);
+            layer = this.createMvtLayer(props, options);
         } else {
             // JOSM
             var josmUrl = url;

js/util/MaplibreGlLazyLoader.js

@@ -47,6 +47,10 @@ BR.MaplibreGlLazyLoader = L.Layer.extend({
 
     _addGlLayer: function () {
         this.glLayer = L.maplibreGL(this.options);
+        // see LayersConfig.createLayer
+        this.glLayer.getAttribution = function () {
+            return this.options.mapLink;
+        };
         this._map.addLayer(this.glLayer);
 
         this._updateZIndex();