Hotdog's Clicking Game - The Music Update

Added a fews songs from the Undertale soundstrack, including:

- Enemies Approaching

- Heartache

- Shop

- Waterfall

- Spear of Justice

- Stronger Monsters

- Song That Might Play When You Fight Sans

- Asgore

- Megalovania

Along with this, I also patched a bug where if you picked up the 2x Hero Lvl powerup (The sword one) and it brought them to lvl 10/50, they would have that cosmetic still when the powerup ends, so you could have a Lvl 25 that looks like a Lvl 50.