get_available_files: Helper function for download_abs_data_cube to show the available catalogues.
Description
This function lists the possible files that are available in a catalogue.
The filename (or an unambiguous part of the filename) must be specified
as a string as an argument to download_abs_data_cube.
character string specifying the catalogue, e.g. "labour-force-australia-detailed".
You can use show_available_catalogues to find this out.
refresh
logical; `FALSE` by default. If `FALSE`, an internal table
of the available ABS catalogues is used. If `TRUE`, this table is refreshed
from the ABS website.
Value
A tibble containing the title of the file, the filename and the complete url.