Bug 27265: Enable message queue cron to accept multiple codes and types

Bug 27265: Enable message queue cron to accept multiple codes and types

It would be nice to be able to combine several types in a single run,
but exclude others, without having to have multiple cron lines

Test Plan:
1) Apply this patch
2) Run process_message_queue.pl with a single -c parameter
3) Note behavior is unchanged
4) Run process_message_queue.pl with multiple -c parameters
5) Note all the codes specified are processed
6) Repeat 2-5 with -t for type limits

Signed-off-by: Andrew Fuerste-Henry <andrewfh@dubcolib.org>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>