Clean exit on failure

[Janrupf]

Is your feature request related to a problem? Please describe.
Currently there is no clean way to exit the process when a fatal error occurs. Exceptions either bubble up and cause a crash, or worse, get eaten somewhere in the framework and cause the process to hang without exiting.

Describe the solution you'd like
A method to exit the process in case of a failure. Minecraft crash reports should be reused, as there are tools out there which can parse information out of such logs.

This could be extended with an error screen displayed to the user.

Describe alternatives you've considered
System.exit - However, that would kill the process without a clear indication why.
Throwing the exception - Mentioned above, gets swallowed a lot of times