[seamlisten] Explore folders

## What ?

When looking at results, sometimes it is easier to explore a folder.
Having the possibility to list files (mining results and audio files) would improve the usability of the seamlisten tool

[Internal issue: 11]

Start by locating the seamlisten entry point and reading how it presents results. Trace where mining results and audio files are represented, then determine the existing folder-navigation flow. Done means the tool can list those files when exploring a folder and the behavior is covered by the project's relevant checks.

Written by the indexing model from the issue text.