Updates to Scale

The Github GameOff 2023 has finally wrapped!  I've taken into account some of the feedback I've received to improve the player experience.

Here's what has been updated:

• implemented coyote time, allowing the player to jump for a short period of time after exiting grounded state
• added background music by 魔王魂 (MaouDamashii)
• replaced the default unity background with a simple day/night cycle
• added 2 more skeletons to find, bringing the total to 20

Huge thanks to everyone who took the time to play the game and provide feedback.  This was an amazing first game jam experience for me and I'm looking forward to joining the Github GameOff in 2024!