feat(parser): add ChannelAgeGate node

src/parser/classes/ChannelAgeGate.ts

@@ -0,0 +1,30 @@
+import { Parser } from '../index.js';
+import Button from './Button.js';
+import Text from './misc/Text.js';
+import Thumbnail from './misc/Thumbnail.js';
+
+import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+
+class ChannelAgeGate extends YTNode {
+  static type = 'channelAgeGate';
+
+  channel_title: string;
+  avatar: Thumbnail[];
+  header: Text;
+  main_text: Text;
+  sign_in_button: Button | null;
+  secondary_text: Text;
+
+  constructor(data: RawNode) {
+    super();
+    this.channel_title = data.channelTitle;
+    this.avatar = Thumbnail.fromResponse(data.avatar);
+    this.header = new Text(data.header);
+    this.main_text = new Text(data.mainText);
+    this.sign_in_button = Parser.parseItem<Button>(data.signInButton, Button);
+    this.secondary_text = new Text(data.secondaryText);
+  }
+}
+
+export default ChannelAgeGate;