Return the available Cone Search catalogs as a list of strings.
These can be used for the catalog_db argument to
conesearch().
Parameters:
cache : bool
Use caching for VO Service database. Access to actual VO
websites referenced by the database still needs internet
connection.
verbose : bool
Show download progress bars.
pattern : str or None
If given string is anywhere in a catalog name, it is
considered a matching catalog. It accepts patterns as
in fnmatch and is case-insensitive.
By default, all catalogs are returned.
sort : bool
Sort output in alphabetical order. If not sorted, the
order depends on dictionary hashing. Default is True.