Added memory arena

Fixed frames in flight validation error in vulkan
Added some utility macros
Added function decorator macros
Added some consolidation headers/code include files

code/first.c

@@ -2,9 +2,8 @@
 #include <stdbool.h>
 #include <SDL3/SDL.h>
 
-#include "core/types.h"
-#include "core/platform.h"
-#include "core/macros.h"
+#include "core/core.h"
+#include "os/core.h"
 
 #include "vulkan/core.h"
 
@@ -114,4 +113,6 @@ int main(int argc, char **argv) {
 	return 0;
 }
 
+#include "core/core.c"
+#include "os/core.c"
 #include "vulkan/core.c"