Fix skin drop bug affecting small number of players, plus add a settings interfa — Coconut Steam update #896689

The biggest change for gameplay in this patch was updating how the game requests skins. This update should hopefully resolve a handful of complaints that players didn't receive a skin after the countdown. Thanks to those who reached out to let us know about this issue. Additionally a settings interface has been added, including a "promo code" system which we will use in the future for discord-based giveaways. Finally, we added better error screens, so now if something goes wrong it will pop up a visible error message with a purple background indicating the issue and possible fixes, as well as directions to contact us in the event of a persisting issue. Looking forward to what you all think!