IVGCVSW-4624 Add a RANK Reference Implementation

 * Add Rank front end
 * Add Rank reference implementation
 * Add Rank serialization support
 * Add Scalar serialization support

Signed-off-by: Finn Williams <Finn.Williams@arm.com>
Change-Id: I06e4a468c2a84e79bae2e6c5348596bbbf853b4b
diff --git a/src/backends/reference/RefWorkloadFactory.hpp b/src/backends/reference/RefWorkloadFactory.hpp
index 941f1a6..e2eab07 100644
--- a/src/backends/reference/RefWorkloadFactory.hpp
+++ b/src/backends/reference/RefWorkloadFactory.hpp
@@ -209,6 +209,9 @@
     std::unique_ptr<IWorkload> CreateQuantize(const QuantizeQueueDescriptor& descriptor,
                                               const WorkloadInfo& info) const override;
 
+    std::unique_ptr<IWorkload> CreateRank(const RankQueueDescriptor& descriptor,
+                                          const WorkloadInfo& info) const override;
+
     std::unique_ptr<IWorkload> CreateReshape(const ReshapeQueueDescriptor& descriptor,
                                              const WorkloadInfo& info) const override;