Add ability to hide owned Heroes pls

I was thinking it would be a nice feature to hide heroes we own and don't use, especially when a game like this has over 100.

Honestly I kinda regret buying the digital starter bundle edition since I don't like 3/4 of the heroes in it now...I really wish this game had a "try hero" before you buy like Heroes of the Storm does...that way I could make better informed decisions with my money.