Add Courses (#49)

* castle and stadium

* castle

* boardwalk & snowland

* turnpike

---------

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

src/data/path_spawn_metadata.c

@@ -7,6 +7,9 @@
 #include <assets/kalimari_desert_data.h>
 #include <assets/moo_moo_farm_data.h>
 #include <assets/choco_mountain_data.h>
+#include <assets/wario_stadium_data.h>
+#include <assets/bowsers_castle_data.h>
+#include <assets/frappe_snowland_data.h>
 
 // @warning Array contains an extra zero element at the end.
 KartAIBehaviour *gKartAIBehaviourLUT[] = {