add Image source imageSmoothing option

Add Image smoothing checkbox to example

Test imageSmoothing option

rendering/cases/image-disable-smoothing/main.js

@@ -0,0 +1,29 @@
+import ImageLayer from '../../../src/ol/layer/Image.js';
+import Map from '../../../src/ol/Map.js';
+import Static from '../../../src/ol/source/ImageStatic.js';
+import View from '../../../src/ol/View.js';
+import {fromLonLat, transformExtent} from '../../../src/ol/proj.js';
+
+const source = new Static({
+  url: '/data/tiles/osm/5/5/12.png',
+  imageExtent: transformExtent([-123, 37, -122, 38], 'EPSG:4326', 'EPSG:3857'),
+  imageSmoothing: false,
+});
+
+new Map({
+  pixelRatio: 1,
+  target: 'map',
+  layers: [
+    new ImageLayer({
+      source: source,
+    }),
+  ],
+  view: new View({
+    center: fromLonLat([-122.416667, 37.783333]),
+    zoom: 12,
+  }),
+});
+
+render({
+  tolerance: 0.001,
+});