[Feature Request] Item Level To Filter Builder

[KevinTyrrell]

Often times browsing by item level is valuable. For example enchanters can target specific item levels to guarantee specific sets of disenchanting materials as results. Currently if you want to search for an item level range, you must hover over every item in the list (assuming you have an addon that modifies your tooltip). Even with that solution, there is no guarantee that item you are searching for is in the item level range. Aux providing this support would be greatly appreciated.