Add Support to Mapper 174 205 176

[TheBoxGamePL]

[negativeExponent]

added mapper 174, fixed mapper 205 DONE

as for mapper 176, ill just probably backport mapper 176 from fceumm and use that for all future iNES/NES2 headered mapper 176 rom files and keep the current fk23.c to emulate the UNIF fk23/A variants just because of its legacy split-rom variants (not entirely sure if FCEUX want to leave split-rom handling as-is or just merge split prg/chr into one prg/chr chunk like how iNES/NES2 headered files are handled.)