add FORETANC layer

patches/frontend/src/conf/map.config.ts

@@ -74,6 +74,15 @@ export const MAP_CONFIG = {
       wms: true,
       attribution: '© SPW'
     },
+    {
+      name: "Ancienneté des forêts actuelles",
+      minZoom: 13,
+      maxZoom: 20,
+      layer: "//geoservices.wallonie.be/arcgis/services/FORET/FORETANC/MapServer/WMSServer?",
+      layers: '1',
+      wms: true,
+      attribution: '© SPW'
+    },
   ],
   CENTER: [46.52863469527167, 2.43896484375],
   ZOOM_LEVEL: 6,