Restrict item names being unique

I’m not sure what th use-case for having identical item names. But it does cause various problems. See Feature request - set id OR unique item names · Issue #98 · bitwarden/cli · GitHub

  • WHAT: I need an configurable ability in global.override.env to reject item adding if there is already same item name in the MS SQL DB.
  • WHY: This is good for using BW to manage host passwords.