More UI Enhancements an Menu Music

As the title says, the menus are prettier, and theres music playing on them, as I write this, I remebered that the sphere surrounding the game arena, was supposed to shrink and cause damage to players, and I forgot to do it.......oops. Maybe next update, I'll find time and do it, honestly the worst part of imlementing new mechanics in this proyect is the testing part, it's reaaaaally slow on the Unity build I'm using, the main scene of the game has thousands of entities, just hitting the save button freezes the editor for like 30 seconds, i have to look into that it's not normal I think. Well that's all I have to say this time, be well!