[MGC] Handle the player person death

[kreghek]

If the player person death:

• [ ] Show death person and environment - monsters (includng person killer), map etc.
• [ ] Show death reason as big text over game scene. It is allow the player to understand happened situation.
• [ ] Switch the main scene to the game result scene. Automatic or with some button.
• [x] Ensure a user can play again.