Major refactoring of main program code

Changelog - v1.1.0:

Key Changes

1. Import Statements:

   • The updated version adds an import for MagicNumbers from lib.parameters.

2. Ground Class:

   • A method place_ground is added with detailed comments explaining the code.
   • get_collision_coords method is added for collision detection.

3. Player Class:

   • self.powerstate initialization now uses MagicNumbers.STARTING_POWERSTATE instead of a hardcoded 0.
   • self.fire_cooldown initialization remains unchanged.
   • In the coin_check method, the condition for incrementing powerstate is modified to check that powerstate is less than 2.

4. Level Initialization:

   • The GROUND_WIDTH is now set using MagicNumbers.GROUND_WIDTH instead of a hardcoded value.

5. Rendering Logic:

   • Minor changes in the Brick class for rendering and updating the screen.