Code refactor finished! Now what? + Happy New Year!

[XurxoMF]

As you can read in the title, I've finished refactoring the code!

I'm not going to explain everything I did here, as I'll put that in the patch notes when I publish the new version, but I've completely changed the internal structure of the project to organize everything better by folders, improved the structure and translation system (I'll make a guide in a few days) to make it easier to translate and add new keys, changed the interface to make it prettier and more intuitive, improved performance when changing Contexts and so on...

Before publishing the new version I want to implement a couple of things like general settings for the default folder for installations and versions, background music in the launcher, a loading screen when opening the app while it loads all the content, a mini guide when opening the app for the first time(I'll add this on the future, for now on the Wiki guide is enough), change some internal things (adjust z-index and h1, h2, h3...)... it shouldn't take me too long.

Another thing I want to do before I publish the new version is to update the Wiki and redo the guides using GIFs or short videos, make it more visually beautiful by adding banners, indexes, etc...
I also want to add a couple of pages for developers explaining how the code is structured and other technical details so that if anyone wants to make a PR with some improvement/functionality that interests them, they can know how everything is.

Once all this is finished I will implement automatic backups and basic mod management. Then I will add automatic mod updates and other things, all in due time.

Sorry for taking so long but you will see that it will be worth it. Between all of you who are translating, reporting bugs, contributing ideas... we are going to make this launcher amazing.

Thank you so much for reading and I wish you a Happy New Year 🎊❤️!