pdm: support quantity_unit and metric_type conversion in stock browser

Convert the amounts in inventory list view, the movement history list
views still show in movement unit for simplicity.
5 jobs for feat/stock_browser_dialog in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-TestRunner1

00:50:11

passed ERP5.PerformanceTest-TestRunner1

00:33:09

passed ERP5.UnitTest-TestRunner1

03:26:33

failed ERP5.UnitTest-TestRunner1

01:39:16

canceled ERP5.UnitTest-TestRunner1