[IMP] product: rename product.uom into uom.uom

addons/account/models/account_analytic_line.py

addons/account/models/account_invoice.py

addons/account/models/account_move.py

addons/account/report/account_invoice_report.py

addons/delivery/models/stock_picking.py

addons/hr_expense/data/hr_expense_data.xml

addons/hr_expense/models/hr_expense.py

addons/hr_expense/security/ir.model.access.csv

addons/hr_timesheet/security/ir.model.access.csv

addons/mrp/models/mrp_bom.py

addons/mrp/models/mrp_production.py

addons/mrp/models/mrp_unbuild.py

addons/mrp/models/mrp_workorder.py

addons/mrp/security/ir.model.access.csv

addons/mrp/wizard/mrp_product_produce.py

addons/mrp_byproduct/models/mrp_subproduct.py

addons/mrp_byproduct/wizard/change_production_qty.py

addons/point_of_sale/data/point_of_sale_data.xml

addons/point_of_sale/models/product.py

addons/point_of_sale/report/pos_order_report.py