refactor: migrate parsers to TS (#133)

* dev: finish top-level parsers TS migration

* dev: migrate menu renderers to TS

* chore: fix ts errors

* dev: finish ts migration 🎉

src/parser/classes/WatchNextEndScreen.ts

@@ -0,0 +1,18 @@
+import Parser from '../index';
+import Text from './misc/Text';
+import { YTNode } from '../helpers';
+
+class WatchNextEndScreen extends YTNode {
+  static type = 'WatchNextEndScreen';
+
+  results;
+  title: string;
+
+  constructor(data: any) {
+    super();
+    this.results = Parser.parse(data.results);
+    this.title = new Text(data.title).toString();
+  }
+}
+
+export default WatchNextEndScreen;