refactor!: finish parser migration

Finally! :)

This removes all code related to the old parser.

#65

lib/parser/classes/EndScreenPlaylist.js

@@ -0,0 +1,20 @@
+'use strict';
+
+const Text = require('./Text');
+const Thumbnail = require('./Thumbnail');
+const NavigationEndpoint = require('./NavigationEndpoint');
+
+class EndScreenPlaylist {
+  type = 'EndScreenPlaylist';
+
+  constructor(data) {
+    this.id = data.playlistId;
+    this.title = new Text(data.title);
+    this.author = new Text(data.longBylineText);
+    this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
+    this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
+    this.video_count = new Text(data.videoCountText);
+  }
+}
+
+module.exports = EndScreenPlaylist;