[MERGE] *: create records in batch

Ensure main Odoo models supports batch record creation.

* `purchase.order.line` supports multi creation in `purchase`, but not anymore when `purchase_stock` is installed.
* `sale.order.line` supports multi creation in `sale`, but not anymore when `sale_purchase` is installed.
* `crm.lead` doesn't support batch creation atm, but it doesn't cost anything to support it.

--
I confirm I have signed the CLA and read the PR guidelines at www.odoo.com/submit-pr

closes odoo/odoo#50468

Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>

addons/crm/models/crm_lead.py

@@ -374,12 +374,12 @@ class Lead(models.Model):
                            self._table, ['create_date', 'team_id'])
         return res
 
-    @api.model
-    def create(self, vals):
-        lead = super(Lead, self).create(vals)
+    @api.model_create_multi
+    def create(self, vals_list):
+        leads = super().create(vals_list)
         # Compute new probability for each lead separately
-        lead._update_probability()
-        return lead
+        leads._update_probability()
+        return leads
 
     def write(self, vals):
         # stage change:

addons/purchase_stock/models/purchase.py

@@ -304,12 +304,11 @@ class PurchaseOrderLine(models.Model):
                             total += move.product_uom._compute_quantity(move.product_uom_qty, line.product_uom)
                 line.qty_received = total
 
-    @api.model
-    def create(self, values):
-        line = super(PurchaseOrderLine, self).create(values)
-        if line.order_id.state == 'purchase':
-            line._create_or_update_picking()
-        return line
+    @api.model_create_multi
+    def create(self, vals_list):
+        lines = super(PurchaseOrderLine, self).create(vals_list)
+        lines.filtered(lambda l: l.order_id.state == 'purchase')._create_or_update_picking()
+        return lines
 
     def write(self, values):
         for line in self.filtered(lambda l: not l.display_type):

addons/sale_purchase/models/sale_order.py

@@ -109,13 +109,14 @@ class SaleOrderLine(models.Model):
     # CRUD
     # --------------------------
 
-    @api.model
+    @api.model_create_multi
     def create(self, values):
-        line = super(SaleOrderLine, self).create(values)
+        lines = super(SaleOrderLine, self).create(values)
         # Do not generate purchase when expense SO line since the product is already delivered
-        if line.state == 'sale' and not line.is_expense:
-            line.sudo()._purchase_service_generation()
-        return line
+        lines.filtered(
+            lambda line: line.state == 'sale' and not line.is_expense
+        )._purchase_service_generation()
+        return lines
 
     def write(self, values):
         increased_lines = None