ItemCount

Function:

 * number itemCount(item, where)

Parameters:

 * item - can be single item id/name, or a table with id/names
 * [optional] where - can be container name, like "Red Backpack", EQ slot name, like "WEAPON", strings: "BPS" (count items only in opened containers), or "any" (count items everywhere - containers + EQ slots); default: "any"

Return value:

 * This function return an number of all items with given ID/name in open containers.

Description:

 * This function return an number of all items with given ID/name in open containers.