Loading scenes

Hey!

I've been working lately on the internal structure in the game and redoing some things to adapt it for a longer project, things that I didn't think about it before.

For future locations and scenes, the game will be split into different scenes to not overload the main scene so everything will be more smoothly, this will allow me to add more scripts and functionalities along with more control of what I want to offer to the people. It took me some time but it's finally done, it can seem like a simple thing to do but it took me quite a lot of work "under the hood" to achieve it, so I'm pretty happy with the results. You can navigate now across scenes with persistent variables and save/load them without any problems. The structure for a longer project it's already settled guys :)