Adds initial project structure and core classes

Sets up the initial Unreal Engine project structure.
Includes the creation of core classes such as:
- A custom GameMode
- A PlayerController
- A PlayerPawn
- A Centipede Pawn

Also configures Git integration and includes a default level.

.idea/.idea.M4_CPP.dir/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>