Bug 20212: Add more embeddable objects to orders

Bug 20212: Add more embeddable objects to orders

This patch adds options to embed more related objects based on the needs
by parcel.tt.

For filtering by biblioitems fields (ISBN and EAN) I had to make the
'list' method a modified version of the objects->search helper. I
thought of doing it in a more generic way but I didn't find any other
use cases and it would certainly make an already complex piece of code
even more complex.

So this is quite similar, but at some steps the biblio.<biblioitem
field> gets translated into the proper relation names, and the same
happens for prefetching.

A new parameter is also added: only_active. It makes the controller use
Koha::Acquisition::Orders->filter_by_active, avoiding the need to build
complex queries in the UI.

The same handling is done when the order_id parameter is passed (outside
the q= parameters). In this case using Koha::Acquisition::Orders->filter_by_id_including_transfers

This is all respecting the C4::Acquisitions::SearchOrders behaviour.

TL;DR:

This patch adapts the code from the list() sub so it manipulates the
query parameters and the embed header so:
- the biblioitem relationship is prefetch
- any queries on biblio.isbn and biblio.ean are correctly translated into search on the
  biblioitems table.
- Adds an only_active parameter to the /acquisitions/orders route to
  easily request only the active orders.

Signed-off-by: Séverine QUEUNE <severine.queune@bulac.fr>
Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>