Additional fields in Item Price (#14540)

* [IMPROVEMENT] Item Price New Fields and Features

* [IMPROVEMENT] Item Price

 - Item Price insert against Qty, Supplier/Customer, Validup/Validfrom
 - Stock Setting to accept Default Price List for Purchase or Sales Item
 - Move Item Section in Item Price

* Fetch default Item Price based on Customer as null

* test fixes

* Code cleanup and fixed the issue of incorrect item price fetched against the customer

* Removed min qty from packing_increment calculation

* Removed auto_update_price_list_rate from the stock settings

* Revert sales_order.json changes

* Removed sales, purchase price list from stock settings because this fields are already available in selling, buying settings

* Removed unnecessory file

* Fixed item price validation code

erpnext/public/js/controllers/transaction.js

@@ -342,6 +342,7 @@ erpnext.TransactionController = erpnext.taxes_and_totals.extend({
 							conversion_factor: item.conversion_factor,
 							weight_per_unit: item.weight_per_unit,
 							weight_uom: item.weight_uom,
+							uom : item.uom,
 							pos_profile: me.frm.doc.doctype == 'Sales Invoice' ? me.frm.doc.pos_profile : ''
 						}
 					},
@@ -1016,6 +1017,7 @@ erpnext.TransactionController = erpnext.taxes_and_totals.extend({
 					"item_group": d.item_group,
 					"brand": d.brand,
 					"qty": d.qty,
+					"uom": d.uom,
 					"parenttype": d.parenttype,
 					"parent": d.parent,
 					"pricing_rule": d.pricing_rule,