## About The Pull Request
Continuing the work of
https://github.com/tgstation/tgstation/pull/77850.
it started with finding one that was being missed and causing a
runtime...then I noticed a whole lot more. While I was doing this I
found callbacks that weren't being nulled in `Destroy()`, so I added
that wherever I found these spots as well as some general code cleanup.
There were a lot more of these than I initially hoped to encounter so
I'm labeling it as a refactor.
## Why It's Good For The Game
Fixes lots of runtimes, improves code resiliency.
## Changelog
🆑
refactor: fixed a bunch of instances of callbacks being qdeleted and
cleaned up related code
/🆑
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.
4c870f71ca