Gets the URI scheme for a GFile
RFC 3986 decodes the scheme as:
|[
URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
Common schemes include "file", "http", "ftp", etc.
This call does no blocking I/O.
Returns: a string containing the URI scheme for the given
[GFile|GFile] The returned string should be freed with `g_free()`
when no longer needed.
Gets the URI scheme for a GFile RFC 3986 decodes the scheme as: |[ URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]