Bookmarks Query per utubo

This add-on adds an 'Add Query' option to the bookmark menu.
You can create bookmarks for sorted lists, such as Most Visited, Created Date, URL, etc.
The created bookmark is displayed like a subfolder.

The bookmarks created use a hidden Firefox feature,
so you cannot change the bookmark icon.

The default queries in Firefox
(You can set 'place:...' to URL with 'Add bookmark' to restore these.)

Most visited pages
place:sort=8&maxResults=10

Recent tags
place:type=6&sort=14&maxResults=10

Recent bookmarks
place:parent=menu________&parent=unfiled_____&parent=toolbar_____&queryType=1&sort=12&maxResults=10&excludeQueries=1