feat(frontend): 絵文字ピッカーのカテゴリを多階層フォルダで分類できるように (misskey-dev#12132) (MisskeyIO#196)

Co-authored-by: meronmks <meronmks.8914@gmail.com>
Co-authored-by: mattyatea <mattyacocacora0@gmail.com>

packages/frontend/src/scripts/emojilist.ts

@@ -43,3 +43,9 @@ export function getEmojiName(char: string): string | null {
 		return emojilist[idx].name;
 	}
 }
+
+export interface CustomEmojiFolderTree {
+	value: string;
+	category: string;
+	children: CustomEmojiFolderTree[];
+}