Bug 28474: Pass process_message_queue.pl params to before_send_messages plugin hooks

Bug 28474: Pass process_message_queue.pl params to before_send_messages plugin hooks

It would be useful to send most of the process_message_queue.pl script parameters to any plugin before_send_messages hooks. For example, the Twilio Voice plugin uses before_send_messages to send phone messages, but if the script is called with "-t email", it doesn't know and will make phone calls! If that info were passed in, the plugin could be made aware of it and only make calls if no "-t" or a "-t phone" were set in the parameters.

Test Plan:
1) Apply this patch
2) Install Kitchen Sink plugin v2.2.0 or later
   https://github.com/bywatersolutions/dev-koha-plugin-kitchen-sink/releases/download/v2.2.0/dev-koha-plugin-kitchen-sink-2.2.0.kpz
3) Run misc/cronjobs/process_message_queue.pl with any or all non-email
   related paramters
4) Note the plugin output shows the parameters were passed to the plugin

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>