Make crashhandler recover from Lua hangs

[Astralcircle]

I propose that the crashhandler be able to exit an infinite loop/freeze using a Lua error

Saw this in that repo and i think it would be useful to have it for holylib as well:
https://github.com/blueshank-gh/plugin_crashcapture

[RaphaelIT7]

I would have no idea how to do that rn xD
I'd probably expect I could freeze the main thread with a signal and then tap into it to figure out where it is executing, but idk how I would even safely throw a Lua error in that case :/

It definitely would be nice to have that though.
I could perhaps probably just hook into LuaJIT but that seems ugly too...