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.

src/ol/proj/Projection.js

@@ -3,7 +3,6 @@
  */
 import {METERS_PER_UNIT} from './Units.js';
 
-
 /**
  * @typedef {Object} Options
  * @property {string} code The SRS identifier code, e.g. `EPSG:4326`.
@@ -23,7 +22,6 @@ import {METERS_PER_UNIT} from './Units.js';
  * the default {@link module:ol/proj#getPointResolution} function will be used.
  */
 
-
 /**
  * @classdesc
  * Projection definition class. One of these is created for each projection
@@ -52,7 +50,6 @@ import {METERS_PER_UNIT} from './Units.js';
  * @api
  */
 class Projection {
-
   /**
    * @param {Options} options Projection options.
    */
@@ -88,15 +85,15 @@ class Projection {
      * @private
      * @type {import("../extent.js").Extent}
      */
-    this.worldExtent_ = options.worldExtent !== undefined ?
-      options.worldExtent : null;
+    this.worldExtent_ =
+      options.worldExtent !== undefined ? options.worldExtent : null;
 
     /**
      * @private
      * @type {string}
      */
-    this.axisOrientation_ = options.axisOrientation !== undefined ?
-      options.axisOrientation : 'enu';
+    this.axisOrientation_ =
+      options.axisOrientation !== undefined ? options.axisOrientation : 'enu';
 
     /**
      * @private