FEATURE: mark/select API

[zoumi]

Did you check the docs?

• I have read all the docs.

Is your feature request related to a problem? Please describe.

No

Describe the solution you'd like.

Allow users to select or mark multiple directories or files within directories, and provide an API for retrieving the selected items. This enables users to write their own Lua functions to perform operations such as Git commits, tar compression, and archiving on these files.This kind of functionality offers users a wide range of possibilities for custom extensions.

Describe alternatives you've considered.

No response

Additional Context

relative issue:
#865

[zoumi]

To go a step further: provide a software framework for popup menus, allowing users to integrate their custom functions into the popup menu.