[FEATURE] Notify the user on game exception

We can wrap the `Run` in a `try` and throw up a message box using Eto when an exception occurs, along with sending an exception through an event, so games can do *other* special logic, like sending it to a server
We could also save it to a `crash-logs` folder with the stack trace, some system info, and info about the engine at the time it hit the exception
