feat(Parser): Add ClipSection (#532)

* feat: add `ClipSection`

* fix: Update src/parser/classes/ClipCreation.ts

---------

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

src/parser/classes/ClipSection.ts

@@ -0,0 +1,19 @@
+import type { ObservedArray } from '../helpers.js';
+import { YTNode } from '../helpers.js';
+
+import ClipCreation from './ClipCreation.js';
+
+import { Parser } from '../index.js';
+
+import type { RawNode } from '../types/index.js';
+
+export default class ClipSection extends YTNode {
+  static type = 'ClipSection';
+
+  contents: ObservedArray<ClipCreation> | null;
+
+  constructor(data: RawNode) {
+    super();
+    this.contents = Parser.parse(data.contents, true, [ ClipCreation ]);
+  }
+}