Add 5 loadout slots/presets for each class

For each class we should have few slots which save our choices (1 [2] 3 4 5 - slot number 2 here being active and edited), put it on the side or something - so we can quickly and without fighting with the UI change between weapons for different playstyles.

They should save all choices like perks/weps and their attachements.

For example - I'd like to have these loadouts for Engineer class:

1. Random one for tests and trying stuff
2. "Pilot" with Mechanic perk and some other stuff
3. "Anti-Air" one with Saboteur and TALON
4. "Anti-Veh" with rocket launcher and anti-tank mines
5. etc.

^ of course these are examples for my playstyles, edited by me, don't hardcode them of course!

And don't put them behind paywall LOL