stock_picking_group_by_partner_by_carrier

Purpose

Groups stock pickings by partner and carrier to consolidate deliveries into single shipments.

Features

stock.picking: Enables merging of procurement groups for pickings with the same partner and carrier.
stock.picking: Handles backorder creation with grouping considerations.
stock.picking: Generates delivery reports with moves grouped by sale order.
stock.picking: Adds sale_ids field to link pickings to sale orders.
stock.picking: Provides methods for canceling moves related to specific sale orders.
sale.order: Adds picking_ids field to link sale orders to pickings.
sale.order: Provides method to get formatted name for delivery lines.
stock.picking.type: Adds group_pickings field to enable grouping on operation types.
stock.picking.type: Adds group_pickings_one field to allow grouping even when shipping policy is 'one'.
res.partner: Adds disable_picking_grouping field to prevent grouping for specific partners.
stock.warehouse: Adds group_shippings and group_shippings_one fields related to picking type.
stock.picking.merge: Wizard for manually merging selected pickings based on partner and carrier.
report.stock.report_deliveryslip: Enhances delivery slip to show pending quantities to deliver grouped by sale order.