Game.cpp and World.cpp Cleanup (#159)

* Remove CProperties and delete dup Properties from World.h

* Improvement

* Fix compile

* Cleanup

* Document gRaceState

* wip cleanup

* compile

* Impl PlayerBombKart

* Rename CourseManager_ to CM_

* Finish renames m_ to CM_

* cleanup

* Remove extra printf

---------

Co-authored-by: MegaMech <7255464+MegaMech@users.noreply.github.com>

src/engine/courses/Course.cpp

@@ -16,7 +16,6 @@ extern "C" {
 #include "render_objects.h"
 #include "save.h"
 #include "staff_ghosts.h"
-#include "Engine.h"
 #include "code_800029B0.h"
 #include "render_courses.h"
 extern StaffGhost* d_mario_raceway_staff_ghost;
@@ -153,7 +152,7 @@ void Course::Init() {
 void Course::LoadTextures() {
 }
 
-void Course::SpawnActors() {
+void Course::BeginPlay() {
 }
 
 void Course::InitClouds() {