Bug 32348: Add library public in columns settings

Bug 27360 added public info on libraries table.
This should be added to columns settings.
Currently the column "STMP server" can not be managed in settings.

Test plan :
Play with columns settings of table Administration > Libraries

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>

admin/columns_settings.yml

@@ -337,6 +337,8 @@ modules:
               columnname: library_ip
             -
               columnname: is_pickup_location
+            -
+              columnname: public
             -
               columnname: smtp_server
             -