Proper win and lose conditions (with UI screens)

[Ahillman2000]

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[vincentvason]

Update /w @int-Kaan:

• HP and Intensity Level
• Win Condition: Banish three ghosts.
• Lose Condition: When HP reaches zero.

[Ahillman2000]

Screen to appear on game over (main focus)

• either you win or you lose, options to retry or return to main menu

[vincentvason]

Expected Finish on 10 march