Add meta

Meta/api/IsUsableSpell.lua

@@ -0,0 +1,11 @@
+---@diagnostic disable: missing-return, lowercase-global
+
+---@param index number 
+---@param bookType spell 
+---@param pet  
+---@param spell  
+---@param name string 
+---@return 1nil isUsable 
+---@return 1nil notEnoughMana 
+---Returns whether or not a given spell is usable or cannot be used due to lack of mana. Does not account for spell cooldowns (see GetSpellCooldown() -- returns 1 if other conditions allow for casting the spell (e.g. if the spell can only be cast while outdoors).
+function IsUsableSpell(index, bookType, pet, spell, name) end