Rock paper, scissors, game creation

[elberthcorniell]

In this pull request we want to add the next screens:

• Entry Screen.
• Game Screen.
• Battle Screen.
• Battle UI Screen.
• Game Over Screen.

At the end of the day to I wanted to create a game like Pokemon Emerald, but instead of fighting pokemon, just doing rock, paper, scissors battles. I think I did a good job trying to achieve my initial goal.

Initial goals:

• Pokemon like battles.
• Enemies reach to you when they see you.
• The first one to win 3 rounds wins.
• Object collection.
• Win vs final boss to end the game.

They all were accomplished.