feat(YouTube/Search): add SearchSubMenu node (#340)

src/parser/classes/SearchFilter.ts

@@ -0,0 +1,22 @@
+import { YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import Text from './misc/Text.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+
+class SearchFilter extends YTNode {
+  static type = 'SearchFilter';
+
+  label: Text;
+  endpoint: NavigationEndpoint;
+  tooltip: string;
+
+  constructor(data: RawNode) {
+    super();
+
+    this.label = new Text(data.label);
+    this.endpoint = new NavigationEndpoint(data.endpoint);
+    this.tooltip = data.tooltip;
+  }
+}
+
+export default SearchFilter;

src/parser/classes/SearchFilterGroup.ts

@@ -0,0 +1,20 @@
+import { ObservedArray, YTNode } from '../helpers.js';
+import type { RawNode } from '../index.js';
+import { Parser, YTNodes } from '../index.js';
+import Text from './misc/Text.js';
+
+class SearchFilterGroup extends YTNode {
+  static type = 'SearchFilterGroup';
+
+  title: Text;
+  filters: ObservedArray<YTNodes.SearchFilter> | null;
+
+  constructor(data: RawNode) {
+    super();
+
+    this.title = new Text(data.title);
+    this.filters = Parser.parseArray(data.filters, YTNodes.SearchFilter);
+  }
+}
+
+export default SearchFilterGroup;

src/parser/classes/SearchSubMenu.ts

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