[FIX] account, sale: create invoice lines in batch

This patch changes the create of `account.invoice.line` to use
`model_create_multi`, which allows the batch creation of multiple
invoice lines while only triggering the recompute of all related fields
once.

It also changes the generation of invoices from a SO to take advantage
of the create multi of `account.invoice.line`.

For a SO of 2000 lines:
    Pre-patch:
        ~417s to generate an Invoice
    Post-patch:
        ~30s to generate an Invoice

closes odoo/odoo#31975

Signed-off-by: Raphael Collet (rco) <rco@openerp.com>

0 files changed, 0 insertions, 0 deletions