Increase Code column width by 1 character

Fixes #4

When using the list command under Inventory the Code column does not
show the complete code. It only shows the first 9 characters.

Our longest current inventory codes are 10 characters long.
2 jobs for inventory-code-column-width in 1 minute and 11 seconds
Status Name Job ID Coverage
  Build
passed build_job #7474

00:00:18

 
  Test
passed test_job #7475

00:00:52