EXPANDABLE UPGRADE SYSTEM

This is just the base for it, upgrades are not yet implemented, but thanks to all the work right now, implementing upgrades is easier than ever. The progress bars are how well the upgrades are progressing, and those are driven by a variable as well. Much of the time on this was just spent on figuring out how the UI should look, and to be honest I’m a bit disappointed because it’s not that good, but it’ll be better once it actually functions, because right now you can press the buttons but they don’t do anything that’s visible to the naked eye