#415 Need to expose "attack_type" in spawn_npcs table to spawn set commands/lua

adding these to the info struct:

int32           range_last_attack_time
int32           primary_last_attack_time
int32           secondary_last_attack_time
int16           primary_attack_delay
int16           secondary_attack_delay
int16           ranged_attack_delay
int8            primary_weapon_type
int8            secondary_weapon_type
int8            ranged_weapon_type
int32           primary_weapon_damage_low
int32           primary_weapon_damage_high
int32           secondary_weapon_damage_low
int32           secondary_weapon_damage_high
int32           ranged_weapon_damage_low
int32           ranged_weapon_damage_high
int8            wield_type
int8            attack_type
int16           primary_weapon_delay
int16           secondary_weapon_delay
int16           ranged_weapon_delay

int8            override_primary_weapon
int8            override_secondary_weapon
int8            override_ranged_weapon

Example of overriding the primary weapon and setting low dmg to 10 high dmg to 20 with a 1 second delay:

  SetInfoStructUInt(NPC, "override_primary_weapon", 1)
  SetInfoStructUInt(NPC, "primary_weapon_delay", 1000)
  SetInfoStructUInt(NPC, "primary_weapon_damage_low", 10)
  SetInfoStructUInt(NPC, "primary_weapon_damage_high", 20)
  SetInfoStructUInt(NPC, "primary_weapon_type", 1)
  SetInfoStructUInt(NPC, "wield_type", 1)