Revert "Revert "Added Entity.java Controller.java GUI.java View.java and Game.java, all without content.""

This reverts commit abf3f4ccf03a31b8a000ee4beed38479165969f9.

Revert "Added Entity.java Controller.java GUI.java View.java and
Game.java, all without content."

This reverts commit
35131baeddfbf93b728db5cce0339f56b0d57a5f.