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/armnnSerializer/ArmnnSchema.fbs b/src/armnnSerializer/ArmnnSchema.fbs
index 438ea83..a409715 100644
--- a/src/armnnSerializer/ArmnnSchema.fbs
+++ b/src/armnnSerializer/ArmnnSchema.fbs
@@ -170,7 +170,8 @@
     Fill = 57,
     Rank = 58,
     LogicalBinary = 59,
-    Reduce = 60
+    Reduce = 60,
+    Cast = 61
 }
 
 // Base layer table to be used as part of other layers
@@ -219,6 +220,10 @@
     axis:int;
 }
 
+table CastLayer {
+    base:LayerBase;
+}
+
 enum ComparisonOperation : byte {
     Equal = 0,
     Greater = 1,
@@ -964,7 +969,8 @@
     FillLayer,
     RankLayer,
     LogicalBinaryLayer,
-    ReduceLayer
+    ReduceLayer,
+    CastLayer
 }
 
 table AnyLayer {