Implements trust levels

[ike709]

Closes #630

This needs extensive testing / a good review. I want trustlevels implemented before I set up an opendream compiler discord bot, and it'd be nice if they actually work.

I've done some minimal testing with fexists() but I can't think of every possible bypass attempt.

Also, when I was unsure of whether or not something should check the trustlevel I erred on the side of caution except when doing so would block TestGame from starting in Ultrasafe.

[ZeWaka]

>no docker for the bot

[ike709]

The bot will be in a docker container. I'm just paranoid.

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[ike709]

Need to tweak this to utilize https://github.com/space-wizards/RobustToolbox/commit/68f89c895846c3dcf8e514f238a3837b5486f8cb in ultrasafe.

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[ike709]

This is something that should be revisited in the future (someone else feel free to take over), but honestly I have no desire to revisit it and I might just press on with making a Discord OD bot without it.