feat(parser): Add FormPopup.ts parser class (#1057)

* Update src/parser/classes/FormPopup.ts

---------

Co-authored-by: absidue <48293849+absidue@users.noreply.github.com>

Author: dnicolson

src/parser/classes/FormPopup.ts

@@ -0,0 +1,21 @@
+import { YTNode } from '../helpers.js';
+import { Parser, type RawNode } from '../index.js';
+import { type ObservedArray } from '../helpers.js';
+import Text from './misc/Text.js';
+import Form from './Form.js';
+import Button from './Button.js';
+
+export default class FormPopup extends YTNode {
+  static type = 'FormPopup';
+
+  title: Text;
+  form: Form | null;
+  buttons: ObservedArray<Button>;
+
+  constructor(data: RawNode) {
+    super();
+    this.title = new Text(data.title);
+    this.form = Parser.parseItem(data.form, Form);
+    this.buttons = Parser.parseArray(data.buttons, Button);
+  }
+}

src/parser/nodes.ts

@@ -183,6 +183,7 @@ export { default as FeedTabbedHeader } from './classes/FeedTabbedHeader.js';
 export { default as FlexibleActionsView } from './classes/FlexibleActionsView.js';
 export { default as Form } from './classes/Form.js';
 export { default as FormFooterView } from './classes/FormFooterView.js';
+export { default as FormPopup } from './classes/FormPopup.js';
 export { default as GameCard } from './classes/GameCard.js';
 export { default as GameDetails } from './classes/GameDetails.js';
 export { default as Grid } from './classes/Grid.js';