[Feature Request] Adding tabs for sorting external files.

[TheNametag]

There's a ton of mods available for ZDoom. Not to mention the thousands upon thousands of maps available. It'd be nice if, instead of having one huge list that they all go in (especially if you swap through them a lot, the whole point of having the launcher) you could sort them into categories. They'd have to be ones the user can define, so for example I could have one for Doom 1 maps, one for weapon mods, one for Final Doomer+ compatability, etc. etc. Though that might then need a second box for load order.