Add Blog App listing#104

boxel-submission-bot wants to merge 1 commit intomaincardstack/boxel-catalog:mainfrom

room-IUVCQ0lqU05iaGtKVEtrdU1iTDpsb2NhbGhvc3Q/blog-appcardstack/boxel-catalog:room-IUVCQ0lqU05iaGtKVEtrdU1iTDpsb2NhbGhvc3Q/blog-appCopy head branch name to clipboard