Allow "Move to" context menu to be hierarchical to match Repositories groups

We use nested groups to great effect in the Repositories view to manage our all our projects, often consisting of 100+ repos each. To arrange the repos in these groups we can either drag and drop into the group or use the context menu and choose "Move To".

With a hundred repos in a group dragging repos to another group does not work (in the past it would scroll slowly if you moved to the top/bottom of the view but this no longer appears to work) so we now use the context menu. The issue with the context menu is that it is a flat representation of all the groups. There are up/down arrows at the top of the context sub-menu but these only adjust the menu one line at a time which is also very slow.

My feature request is to make the "Move to" menu follow the same hierarchy as the groups in the Repositories view, using sub-menus rather than just spaces. This could be an optional feature enabled in config to not break other customers' workflows.

Some stats about my setup:

Number of repos managed by SmartGit: ~2800

Number of groups defined: ~210 (42 level 1, 146 level 2, 22 level 3)

SmartGit Details

Version: 23.1.3 #20195

Java version: 17.0.5+8-LTS (c:\program files\smartgit\jre)

Windows version: Microsoft Windows [Version 10.0.19045.4412]