Audio alerts for successful and failed checkouts

Purpose: To implement an audio alert for a successful and failed checkouts

User story:

• As a circulation worked quickly processing a large volume of checkouts
• I want to get audio alerts for successful and failed checkouts
• So that I can know when things have failed or succeeded without constantly monitoring the screen for visual alerts

Scenarios:

1. Scenario
   • Given "Enable audio alerts" = Yes in Settings > Circulation > Other settings
   • When an item is successfully checked out
   • Then a "success" audio alert should be generated
2. Scenario
   • Given "Enable audio alerts" = Yes in Settings > Circulation > Other settings
   • When an item checkout fails (e.g. as in UICHKOUT-66)
   • Then a "fail" audio alert should be generated