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/backendsCommon/common.mk b/src/backends/backendsCommon/common.mk
index c31b1f0..7829abb 100644
--- a/src/backends/backendsCommon/common.mk
+++ b/src/backends/backendsCommon/common.mk
@@ -71,6 +71,7 @@
     test/layerTests/NormalizationTestImpl.cpp \
     test/layerTests/PadTestImpl.cpp \
     test/layerTests/Pooling2dTestImpl.cpp \
+    test/layerTests/RankTestImpl.cpp \
     test/layerTests/ReshapeTestImpl.cpp \
     test/layerTests/ResizeTestImpl.cpp \
     test/layerTests/RsqrtTestImpl.cpp \