Loyalty Implants

Creates a configuration setting to allow the regular usage of loyalty implants on the server. If it's allowed, jobs set to spawn with loyalty implants will spawn with loyalty implants. If it's not, jobs set to spawn with loyalty implants will not spawn with loyalty implants.

Admins are still capable of spawning them in and using the player panel to give someone one, if they wish to for whatever reason. They still have the same mechanical features of loyalty implants, so it might be useful for certain events/special things that an admin wishes to use.

Removes all instances of loyalty implants from the map, and keeps them from spawning naturally if the configuration file is set to disallow them.

Comments out supply packs and designs for them, because I could not think of a suitable way to disable it only when it is configured to be disabled. Easy to enable back in through that, if a downstream server wishes to do so.

I'm pretty sure that's it. Feel free to yell at me for obvious blunders, and inform me of not so obvious blunders.