Flavor Universalis Updated (1.37)

This mod is an update to the Flavor Universalis mod, that sadly got deleted after the developer decided to touch grass and got a job at paradox. I am aware that the Europa Expanded team took over the original mod and merged it into theirs, however, many of the missions were not integrated, so I decided I might as well update it for the people who care. If you are not familiar with Flavor Universalis, or don't remember the mission trees it included, check out the wiki for more information. While the goal of this mod is to update FU to 1. 37, this also includes making some minor alterations to the original content to ensure it works with modern additions to the game. An example of this is that the Ottomans also get their disaster mission tree from vanilla added to the FU mission tree, because otherwise it would be impossible to end the diasters the ottomans get. I've also added the ability to switch between certain mission trees and choose mission trees when forming some nations. There might still be issues with the mod that I wasn't able to find, so if you encounter them, just say so and I will try to fix it.