Unignore Assets/Scripts/ directory and contents
Implement AlarmLight.cs
Add audio to megaphones

* Apply changes to each prop_megaphone_00* prop
* Tag as Siren
* Add Audio Source
  + Audio Clip = Assets/Audio/alarm_triggered.ogg
  + Untick Play On Wake (alarm initially off)
  + Tick Loop
  + 3D Sound Settings>Min Distance = 5