I was an idiot in #57797 and forgot to make the rune wizards can buy to add shield charges to their shielded hardsuits actually delete after being used, allowing you to use one rune infinitely. Oops! This PR fixes that.
No more invincible wizards
Loosely adapted from /vg/. This is an entity component system for adding behaviours to datums when inheritance doesn't quite cut it. By using signals and events instead of direct inheritance, you can inject behaviours without hacky overloads. It requires a different method of thinking, but is not hard to use correctly. If a behaviour can have application across more than one thing. Make it generic, make it a component. Atom/mob/obj event? Give it a signal, and forward it's arguments with a SendSignal() call. Now every component that want's to can also know about this happening.
See this thread for an introduction to the system as a whole.