COMPMID-2549: Add GLES Runtime Context interfaces.

* Creates interfaces and concrete classes
* Ports GCActivationalLayer
* Adapts test framework and relevant tests

Change-Id: Ide36cd65ebf185958db3c4a5bebd630fcb2f39b3
Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-on: https://review.mlplatform.org/c/2199
Reviewed-by: Pablo Marquez <pablo.tello@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/core/CL/CLHelpers.h b/arm_compute/core/CL/CLHelpers.h
index 9130e05..8801af5 100644
--- a/arm_compute/core/CL/CLHelpers.h
+++ b/arm_compute/core/CL/CLHelpers.h
@@ -182,5 +182,5 @@
  * @return An opencl kernel
  */
 cl::Kernel create_opencl_kernel(CLCoreRuntimeContext *ctx, const std::string &kernel_name, const CLBuildOptions &build_opts);
-}
+} // namespace arm_compute
 #endif /* __ARM_COMPUTE_CLHELPERS_H__ */