[th03/res_yume] Initial state

AKA "ZUN -5".
[th03/res_yume] Reduce all known library functions

TH03 doesn't prepare the initial high score list (instead leaving that to
MAINL.EXE), and the config file creation is identical to the one in TH02.
2 functions, surrounded by 88.8% of library code. Way to go.