Added GLib message logging mechanism.

summary_:
Added macros DEBUG, CRITICAL, WARNING for g_debug,g_critical,
g_warning respectively.

Signed-off-by: Nandini Raju <Nandini.Raju@in.bosch.com>
Reviewed-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Philip Withnall <philip.withnall@collabora.co.uk>
Differential Revision: https://phabricator.apertis.org/D709