[Feature suggestion] Do nicer handling of game crashes

[Wohlstand]

Hello!

Recently, I tried CEMU to test out my homebrew application, and during the debugging process, I met with some issues (with my own application), and after I solved them and during various discussions with other people, I got the next idea: Would be cool to handle crashes of games/applications that runs inside the CEMU nicer, I mean:

• Pop a message box that tells that game itself crashed, not the CEMU itself (otherwise, it's confusing for uninformed users).
• Optionally (should be disabled by default, but allow to enable this by menu, or by debug settings), turn on the PPC debugger to show all the state of the running game on a moment of the crash (with explicit popping of the message box that the game itself crashed).