Bug 8775: Add collection code to lost report

Bug 8775: Add collection code to lost report

This patch adds a column for collection code to the lost items report.

To test, apply the patch and run the lost items report. You should see a
collection code column.

Test column configuration for this table: Go to Administration ->
Configure columns. Confirm that the "collection_code" column can be
configured and that configuration choices are applied correctly.

Signed-off-by: Bin Wen <bin.wen@inlibro.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>