refactor!: finish parser migration

Finally! :)

This removes all code related to the old parser.

#65

lib/parser/classes/Thumbnail.js

@@ -0,0 +1,35 @@
+'use strict';
+
+class Thumbnail {
+  /**
+   * @type {string}
+   */
+  url;
+  /**
+   * @type {number}
+   */
+  width;
+  /**
+   * @type {number}
+   */
+  height;
+
+  constructor ({ url, width, height }) {
+    this.url = url;
+    this.width = width;
+    this.height = height;
+  }
+
+  /**
+   * Get thumbnails from response object
+   *
+   * @param {object} data - response object
+   * @returns {Thumbnail[]} sorted array of thumbnails
+   */
+  static fromResponse(data) {
+    if (!data || !data.thumbnails) return;
+    return data.thumbnails.map((x) => new Thumbnail(x)).sort((a, b) => b.width - a.width);
+  }
+}
+
+module.exports = Thumbnail;