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/Tile.js

@@ -1,12 +1,11 @@
 /**
  * @module ol/Tile
  */
-import TileState from './TileState.js';
-import {easeIn} from './easing.js';
 import EventTarget from './events/Target.js';
 import EventType from './events/EventType.js';
+import TileState from './TileState.js';
 import {abstract} from './util.js';
-
+import {easeIn} from './easing.js';
 
 /**
  * A function that takes an {@link module:ol/Tile} for the tile and a
@@ -60,7 +59,6 @@ import {abstract} from './util.js';
  * @api
  */
 
-
 /**
  * @typedef {Object} Options
  * @property {number} [transition=250] A duration for tile opacity
@@ -68,7 +66,6 @@ import {abstract} from './util.js';
  * @api
  */
 
-
 /**
  * @classdesc
  * Base class for tiles.
@@ -76,7 +73,6 @@ import {abstract} from './util.js';
  * @abstract
  */
 class Tile extends EventTarget {
-
   /**
    * @param {import("./tilecoord.js").TileCoord} tileCoord Tile coordinate.
    * @param {TileState} state State.
@@ -126,7 +122,8 @@ class Tile extends EventTarget {
      * The duration for the opacity transition.
      * @type {number}
      */
-    this.transition_ = options.transition === undefined ? 250 : options.transition;
+    this.transition_ =
+      options.transition === undefined ? 250 : options.transition;
 
     /**
      * Lookup of start times for rendering transitions.  If the start time is
@@ -134,7 +131,6 @@ class Tile extends EventTarget {
      * @type {Object<string, number>}
      */
     this.transitionStarts_ = {};
-
   }
 
   /**
@@ -147,8 +143,7 @@ class Tile extends EventTarget {
   /**
    * Called by the tile cache when the tile is removed from the cache due to expiry
    */
-  release() {
-  }
+  release() {}
 
   /**
    * @return {string} Key.
@@ -284,7 +279,7 @@ class Tile extends EventTarget {
       return 1;
     }
 
-    const delta = time - start + (1000 / 60); // avoid rendering at 0
+    const delta = time - start + 1000 / 60; // avoid rendering at 0
     if (delta >= this.transition_) {
       return 1;
     }
@@ -316,5 +311,4 @@ class Tile extends EventTarget {
   }
 }
 
-
 export default Tile;