Adds a circuit network device that will emit a signal when nearby friendly entities are destroyed.

This mod has been written in a few hours and is very crude and simple, but it works.

How to use:
- Craft the Destruction Sensor from the logistics tab (it is next to the constant combinator, and has the same icon)
- Place it anywhere. After you place it, the range will be indicated by a green area (similar to a roboport, except it doesn't show until you place it).
- Do not try to use its GUI. The GUI is a lie, and anything you do in it will not have any effect.
- Wire it up to your circuit. It will emit the D signal, at value 1, for one frame when something gets destroyed.