Add Tensor related utilities to the new API

A couple of utility functions to get the information
about tensors are added. Those functions are placed
at an additional header file for better grouping.
Related test cases are also added.

Resolves: COMPMID-4376

Change-Id: I6bd09cbf60fddcf4fe651906982397afb0451392
Signed-off-by: Sang-Hoon Park <sang-hoon.park@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5405
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/gpu/cl/ClTensor.h b/src/gpu/cl/ClTensor.h
index 4188f62..99d228c 100644
--- a/src/gpu/cl/ClTensor.h
+++ b/src/gpu/cl/ClTensor.h
@@ -24,7 +24,7 @@
 #ifndef SRC_GPU_CLTENSOR_H
 #define SRC_GPU_CLTENSOR_H
 
-#include "src/common/ITensor.h"
+#include "src/common/ITensorV2.h"
 
 #include "arm_compute/runtime/CL/CLTensor.h"
 
@@ -53,7 +53,7 @@
     // Inherrited functions overriden
     void                 *map() override;
     StatusCode            unmap() override;
-    arm_compute::ITensor *tensor() override;
+    arm_compute::ITensor *tensor() const override;
     StatusCode import(void *handle, ImportMemoryType type) override;
 
 private: