add sounds (beep boop)

[tevpg]

Audio confirmation of actions.

• successful check-in sound
• successful check-out sound
• "I need your attention" sound

Chrome OS shell (crosh) seems to support a "sound" command. In the probable event that there isn't a Python library to play sounds on chrome os, then would make os calls at appropriate times.

But of course first place to look would be something like Python's cross-platform playsound library

Considerations: want this to not break if running on Windows or Linux:

• could call subprocess.run and ignore errors
• could check OS and not make calls
• could see if playsound is cross-platform (would need to be installed - maybe a try: on the import? and then gracefully skip sounds if not)

[tevpg]

This is stalled pending figuring out how to make the Chromebook make sounds

[tevpg]

This can work find under linux that supports sound, under windows, and under WSL.

Framework likely to be:

• config is a path to sound player
• sounds (for mvp, just chosen built-in sounds from pixabay)
  • bike in
  • bike out
  • attention
• sound on/off command seems unnecessary

[tevpg]

COnsider a special extra-loud sound if there's a check-in < 1.5 hr before closing