This function will look up the monster with the specified ID number in the database
and return the info set by TYPE argument.
It will return -1 if there is no such item. Due to specific of MOB DB routines,
it's better to check monster name. It'd return "Dummy" for a non-existing monster.

Valid types are listed in const.txt:
MOB_NAME 0 MOB_LV 1
MOB_MAXHP 2 MOB_BASEEXP 3
MOB_JOBEXP 4 MOB_ATK1 5
MOB_ATK2 6 MOB_DEF 7
MOB_MDEF 8 MOB_STR 9
MOB_AGI 10 MOB_VIT 11
MOB_INT 12 JOB_DEX 13
MOB_LUK 14 MOB_RANGE 15
MOB_RANGE2 16 MOB_RANGE3 17
MOB_SIZE 18 MOB_RACE 19
MOB_ELEMENT 20 MOB_MODE 21

Check sample in nps\sample\getmonsterinfo.txt