Solar System V 1.0

This solar system assignment adds the following new adjustments:

1. Mercury, Venus, and Mars are added to the solar system

2. Planets (except the moon) have rendered trails as they orbit, allowing for clarity on their direction as they orbit the sun.

3. Background music from a favorite game was added to the MainCamera to make the map more alive.

4. A free asset adds tooltips to the cursor whenever it hovers over an object, allowing for clearer clicking and identification.

5. A mysterious object (free asset) is orbiting around Mars, with its own sound effect.