Casting fireballs does not just print a message to the console. While NyetHack fireballs are more delicious than strong, they do have an intoxicating effect on the caster. Make the castFireball function return a resulting inebriation value that depends on the number of fireballs cast. The inebriation value should be between 1 and 50, with 50 being the maximum level of intoxication in the game.