Bookmark enhancement: allow selecting destination folder when saving bookmarks

Description:

Currently, when creating a bookmark via Omni, the bookmark is saved to the default bookmarks location. This works, but it becomes limiting once you have a non-trivial bookmark hierarchy.

Proposed enhancement: Add the ability to specify the destination bookmark folder at the time of saving. For example:

Prompt to choose a bookmark folder

Or allow typing/searching for an existing folder

Or remember the last-used folder as an option

Why this is useful:

Users with organized bookmark trees can save items without needing to move them later

Reduces friction for power users who rely on bookmarks heavily

Brings Omni closer to the behavior of Spotlight-style workflows on other platforms

Current workaround: Save the bookmark first, then manually move it to the desired folder in Firefox’s bookmark manager.

Expected behavior: When bookmarking through Omni, the user should be able to choose where the bookmark is saved.