new Hitboxes & Points system!

- Hitboxes :  the hitboxes were changed from a square surrounding the character to a more accurate Mesh surrounding the character. The targets were also switched from Sprites to Meshes. This means it wont look like the characters are always looking at you. They may get distorted near the edge of your screen. This depends on the FOV. I have attached images visually showing the hitbox chage

- Point System:  for every target you shoot you will get a certain amount of points. This amount is based on the time it takes you to shoot the target since the last one you shot. The algorithm that decide how much points you get increases exponentially. This means if it took 1 second then you get 50. If you took 500ms then you get 200 points. If you took 250ms to shoot the target  then you earn 8000 points. This mechanic will increase the skill gap and separate the weak from the strong.

- UI: the game over screen was update to look nicer and include the points. the stats container size was updated and now includes the points