Accept an object literal for static layer styling

test/rendering/cases/icon-sprite/main.js

@@ -2,7 +2,6 @@ import Feature from '../../../../src/ol/Feature.js';
 import Map from '../../../../src/ol/Map.js';
 import Point from '../../../../src/ol/geom/Point.js';
 import View from '../../../../src/ol/View.js';
-import {Icon, Style} from '../../../../src/ol/style.js';
 import {Vector as VectorLayer} from '../../../../src/ol/layer.js';
 import {Vector as VectorSource} from '../../../../src/ol/source.js';
 
@@ -12,15 +11,11 @@ new Map({
   pixelRatio: 2,
   layers: [
     new VectorLayer({
-      style: function () {
-        return new Style({
-          image: new Icon({
-            src: '/data/sprites/gis_symbols.png',
-            color: [255, 0, 0, 1],
-            offset: [32, 0],
-            size: [32, 32],
-          }),
-        });
+      style: {
+        'icon-src': '/data/sprites/gis_symbols.png',
+        'icon-color': [255, 0, 0, 1],
+        'icon-offset': [32, 0],
+        'icon-size': [32, 32],
       },
       source: new VectorSource({
         features: [new Feature(new Point(center))],