Retain back-compatibility for arm_compute/core/Types.h

* Some symbols have been moved from core/Types.h. This patch retains
  back compatibility so that the user can still include this header
  for those symbols

* A new header core/CoreTypes.h is created to avoid circular dependency.
  This header includes essential small types that are used across
  functions

* Move all function info types into function_info folder for easier
  tracking

Resolves COMPMID-6330
Related to https://review.mlplatform.org/c/ml/ComputeLibrary/+/9757

Signed-off-by: SiCong Li <sicong.li@arm.com>
Change-Id: I4739175c2d4d184a9bc8e28b881b497fab03ca60
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9979
Reviewed-by: Jakub Sujak <jakub.sujak@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/runtime/NEON/functions/NEArithmeticSubtraction.h b/arm_compute/runtime/NEON/functions/NEArithmeticSubtraction.h
index 483d81b..6fbe9ad 100644
--- a/arm_compute/runtime/NEON/functions/NEArithmeticSubtraction.h
+++ b/arm_compute/runtime/NEON/functions/NEArithmeticSubtraction.h
@@ -24,8 +24,8 @@
 #ifndef ARM_COMPUTE_NEARITHMETICSUBTRACTION_H
 #define ARM_COMPUTE_NEARITHMETICSUBTRACTION_H
 
-#include "arm_compute/core/ActivationLayerInfo.h"
 #include "arm_compute/core/Types.h"
+#include "arm_compute/function_info/ActivationLayerInfo.h"
 #include "arm_compute/runtime/IFunction.h"
 #include "arm_compute/runtime/NEON/INEOperator.h"