list_filesList files from the Moku file system
User can list files from bitstreams, ssd, logs, persist and media directories. If using the
REST API directly, these directories form the group name in the URL; e.g.
No Client Key is required (ownership doesn't need to be taken).
When using either of the clients, user can access this function directly from instrument reference.
allowed values:bitstreams, ssd, logs, persist, media
Usage in clients,