NCCH: Fixes reduce unnecessary logging and load logo/banner/etc. sections correctly.

Loader: Added ErrorNotUsed ReturnStatus type to specify when something is not used.

src/core/loader/loader.h

@@ -30,6 +30,7 @@ enum class ResultStatus {
     ErrorInvalidFormat,
     ErrorNotImplemented,
     ErrorNotLoaded,
+    ErrorNotUsed,
     ErrorAlreadyLoaded,
 };