Random Skin and Chroma button.

Hey team! I own all skins for the champs I play. I really don't have much of a preference on which I use so I thought it might be fun to have a random option.

An added bonus is that people may buy skins to use it with more variety.

Also, the functionality is already there without a button. Just use the same function you use for the boost, but without actually giving a skin you don't own.