refactor!: finish parser migration

Finally! :)

This removes all code related to the old parser.

#65

lib/parser/classes/EndScreenVideo.js

@@ -0,0 +1,28 @@
+'use strict';
+
+const Parser = require('..');
+const Text = require('./Text');
+const Author = require('./Author');
+const Thumbnail = require('./Thumbnail');
+const NavigationEndpoint = require('./NavigationEndpoint');
+
+class EndScreenVideo {
+  type = 'EndScreenVideo';
+
+  constructor(data) {
+    this.id = data.videoId;
+    this.title = new Text(data.title);
+    this.thumbnails = Thumbnail.fromResponse(data.thumbnail);
+    this.thumbnail_overlays = Parser.parse(data.thumbnailOverlays);
+    this.author = new Author(data.shortBylineText, data.ownerBadges);
+    this.endpoint = new NavigationEndpoint(data.navigationEndpoint);
+    this.short_view_count_text = new Text(data.shortViewCountText);
+    this.badges = Parser.parse(data.badges);
+    this.duration = {
+      text: new Text(data.lengthText).toString(),
+      seconds: data.lengthInSeconds
+    };
+  }
+}
+
+module.exports = EndScreenVideo;