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.

config/jsdoc/api/plugins/inline-options.js

@@ -6,12 +6,11 @@
 const properties = {};
 
 exports.handlers = {
-
   /**
    * Collects all typedefs, keyed by longname
    * @param {Object} e Event object.
    */
-  newDoclet: function(e) {
+  newDoclet: function (e) {
     if (e.doclet.kind == 'typedef' && e.doclet.properties) {
       properties[e.doclet.longname] = e.doclet.properties;
     }
@@ -22,7 +21,7 @@ exports.handlers = {
    * collected typedefs.
    * @param {Object} e Event object.
    */
-  parseComplete: function(e) {
+  parseComplete: function (e) {
     const doclets = e.doclets;
     for (let i = 0, ii = doclets.length; i < ii; ++i) {
       const doclet = doclets[i];
@@ -34,16 +33,18 @@ exports.handlers = {
             const type = param.type.names[0];
             if (type in properties) {
               param.type.names[0] = type;
-              params.push.apply(params, properties[type].map(p => {
-                const property = Object.assign({}, p);
-                property.name = `${param.name}.${property.name}`;
-                return property;
-              }));
+              params.push.apply(
+                params,
+                properties[type].map((p) => {
+                  const property = Object.assign({}, p);
+                  property.name = `${param.name}.${property.name}`;
+                  return property;
+                })
+              );
             }
           }
         }
       }
     }
-  }
-
+  },
 };