A-Frame plugin: fix ar-image-tracker.resolution

plugins/aframe-with-encantar.js

 
     /* async */ tracker()
     {
-        const tracker = AR.Tracker.Image();
+        const tracker = AR.Tracker.Image({
+            resolution: this.data.resolution
+        });
         const referenceImages = [];
 
-        tracker.resolution = this.data.resolution;
-
         for(const child of this.el.children) {
             if(child.components !== undefined) {
                 for(const name in child.components) {
 AFRAME.registerPrimitive('ar-image-tracker', {
     defaultComponents: {
         'ar-image-tracker': {}
+    },
+    mappings: {
+        'resolution': 'ar-image-tracker.resolution',
     }
 });