[level select] randomizer/random level button (mostly for singleplayer)

this is a kinda stupid idea had while looking at the mess i have from downloading the CLA a while ago

i think it would be cool if you could have the game pick a random level from the current folder or collection and just immediately load it and throw you in.
there could be an optional button after finishing a level too

otherwise i don't think i'll ever finish 90% of the CLA levels lul

An option very similar to this already exists, if you open the search window. It will randomly select a level in the game category (so all custom levels).