Make code prettier

This updates ESLint and our shared eslint-config-openlayers to use Prettier.  Most formatting changes were automatically applied with this:

    npm run lint -- --fix

A few manual changes were required:

 * In `examples/offscreen-canvas.js`, the `//eslint-disable-line` comment needed to be moved to the appropriate line to disable the error about the `'worker-loader!./offscreen-canvas.worker.js'` import.
 * In `examples/webpack/exapmle-builder.js`, spaces could not be added after a couple `function`s for some reason.  While editing this, I reworked `ExampleBuilder` to be a class.
 * In `src/ol/format/WMSGetFeatureInfo.js`, the `// @ts-ignore` comment needed to be moved down one line so it applied to the `parsersNS` argument.

examples/full-screen-drag-rotate-and-zoom.js

@@ -1,35 +1,35 @@
 import Map from '../src/ol/Map.js';
-import View from '../src/ol/View.js';
-import {defaults as defaultControls, FullScreen} from '../src/ol/control.js';
-import {defaults as defaultInteractions, DragRotateAndZoom} from '../src/ol/interaction.js';
 import TileLayer from '../src/ol/layer/Tile.js';
+import View from '../src/ol/View.js';
 import XYZ from '../src/ol/source/XYZ.js';
-
+import {
+  DragRotateAndZoom,
+  defaults as defaultInteractions,
+} from '../src/ol/interaction.js';
+import {FullScreen, defaults as defaultControls} from '../src/ol/control.js';
 
 const key = 'get_your_own_D6rA4zTHduk6KOKTXzGB';
-const attributions = '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
+const attributions =
+  '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
   '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';
 
 const map = new Map({
-  controls: defaultControls().extend([
-    new FullScreen()
-  ]),
-  interactions: defaultInteractions().extend([
-    new DragRotateAndZoom()
-  ]),
+  controls: defaultControls().extend([new FullScreen()]),
+  interactions: defaultInteractions().extend([new DragRotateAndZoom()]),
   layers: [
     new TileLayer({
       source: new XYZ({
         attributions: attributions,
-        url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
-        maxZoom: 20
-      })
-    })
+        url:
+          'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
+        maxZoom: 20,
+      }),
+    }),
   ],
   target: 'map',
   view: new View({
     center: [-33519607, 5616436],
     rotation: -Math.PI / 8,
-    zoom: 8
-  })
+    zoom: 8,
+  }),
 });