shared/timeout: Add timeout_add_seconds abstraction

shared/timeout: Add timeout_add_seconds abstraction

g_timeout_add_seconds() call doesn't ensure the time for the first call of
the timer if the delay is less or equal to 1 second.
In case of a 0 delay call g_idle_add() instead of g_timeout_add_seconds().

Signed-off-by: Anuj Jain <anuj01.jain@samsung.com>
Signed-off-by: Ayush Garg <ayush.garg@samsung.com>