Renamed some of the state functions to include the word 'on'. Also
replaced the switch statement in set_hand() with a lookup table
access. This lookup table contains the chips, mult and display name
for a given hand. Some may not like these changes, so we can easily
roll back if need be.
Added a state info map which keeps track of a particular state's on_init, on_update and on_exit functions.
A few of the on_update functions have sub-states, which create extremely long switch statements.
Not sure if perhaps the best route would be to keep the switch statements but break the cases into individual
functions or if we should keep track of substates. The latter sounds like it could get complicated and really
messy quick. Problem for another day.
- Introduced GAME_SPLASH_SCREEN state in game.h
- Implemented splash_screen_init and splash_screen_update functions in splash_screen.c
- Updated game.c to initialize with GAME_SPLASH_SCREEN and handle splash screen updates
- Removed old splash screen code from main.c
