Update logging system

- Update to fmt 6.0.0
- Updated logging system to be macro based
- Fixed a bug with including

src/core/inner_fat.h

@@ -4,8 +4,6 @@
 
 #pragma once
 
-namespace Core {
-
 #include <array>
 #include <type_traits>
 #include <vector>
@@ -14,6 +12,8 @@ namespace Core {
 #include "common/common_types.h"
 #include "common/swap.h"
 
+namespace Core {
+
 class SDMCDecryptor;
 
 /// Parameters of the archive, as specified in the Create or Format call.