Add notifications to logger

[jake-is-ESD-protected]

Right now, the logger only logs job registrations, core erros, launches and finishes. Add a logger call inside the notification system, so that notifications are visible there too. Use the args field of the log buffer to enter the calling job, receiving job and at least a reference to the notification value as uint32_t pointer. It could look like this:

systime (ms) type	 name		instances	error	args
(0000022013) notif: job1		1		    0	    -> job2 <NULL>

This shows that job1 sent a notification to job2 with the value NULL (just a wake-up call).

[jake-is-ESD-protected]

This is a bit complicated, because notifications are peer-to-peer between jobs, not the core. The core performs logging, so this would need a different mechanism...