Bug 30076: Add ability to check patron messaging preferences from a notice

Bug 30076: Add ability to check patron messaging preferences from a notice

Some libraries want to be able to use a patron's messaging preferences to conditionally change the contents of a notice depending on the patron's other messaging preference. For example, a library has requested to have the note on the hold slip if the patron has requested phone messages for waiting holds. This really only entails adding a method to the Koha::Patron class to allow this type of looking.

Test plan:
1) Apply this patch
2) Enable item checkout notices for a patron for email, but not sms
3) Include the following in the notice:
   TEST1: [% borrower.has_messaging_preference({ message_name => 'Item_Checkout', message_transport_type => 'email' }) %]
   <br/>
   TEST2: [% borrower.has_messaging_preference({ message_name => 'Item_Checkout', message_transport_type => 'sms' }) %]
4) Generate a checkout and notice for that patron
5) Note the generated notice has a 1 for TEST1, but not for TEST2

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>