iEquip_SpellExt

@brief Returns the weapon type of the weapon summoned by the bound spell.
@param a_spell The spell to check.
@return The type of the weapon summoned by the bound spell.
VALID TYPES:
-1 - Not Found
00 - Hand-to-hand melee
01 - One-handed sword
02 - One-handed dagger
03 - One-handed axe
04 - One-handed mace
05 - Two-handed sword
06 - Two-handed axe
07 - Bow
08 - Staff
09 - Crossbow

@brief Returns whether the given spell is a bound spell.
@param a_spell The spell to check.
@return Returns true if the given spell is a bound spell, else returns false.

@brief Returns whether the given spell is a healing spell.
@param a_spell The spell to check.
@return Returns true if the given spell is a healing spell, else returns false.