IVGCVSW-5410 Add front-end support for CAST
IVGCVSW-5415 Add TfLiteParser support for CAST

 * Added front end support for CAST, including support in the
Reference workload, Serialization, Deserializtion, Unit tests, and
TfLiteParser.

Signed-off-by: mathad01 <matthew.haddon@arm.com>
Change-Id: Iaf670ca5912a21ed6bc84f7f83a68b42154846bb
diff --git a/src/backends/reference/backend.mk b/src/backends/reference/backend.mk
index 9676509..bf18284 100644
--- a/src/backends/reference/backend.mk
+++ b/src/backends/reference/backend.mk
@@ -47,6 +47,7 @@
         workloads/RefArgMinMaxWorkload.cpp \
         workloads/RefBatchNormalizationWorkload.cpp \
         workloads/RefBatchToSpaceNdWorkload.cpp \
+        workloads/RefCastWorkload.cpp \
         workloads/RefComparisonWorkload.cpp \
         workloads/RefConcatWorkload.cpp \
         workloads/RefConstantWorkload.cpp \