IVGCVSW-4906 Add front-end support for FILL operator

 * Added new fill layer
 * Added visitor tests

Signed-off-by: Ryan OShea <Ryan.OShea2@arm.com>
Change-Id: Iea677014866b4f2d514004623f59ee83f3c0eef8
Signed-off-by: Keith Davis <keith.davis@arm.com>
diff --git a/src/armnn/Network.cpp b/src/armnn/Network.cpp
index fa8eaaf..180c00b 100644
--- a/src/armnn/Network.cpp
+++ b/src/armnn/Network.cpp
@@ -1186,6 +1186,12 @@
     return m_Graph->AddLayer<ElementwiseUnaryLayer>(elementwiseUnaryDescriptor, name);
 }
 
+IConnectableLayer* Network::AddFillLayer(const FillDescriptor& fillDescriptor,
+                                         const char* name)
+{
+    return m_Graph->AddLayer<FillLayer>(fillDescriptor, name);
+}
+
 IConnectableLayer* Network::AddFullyConnectedLayerImpl(const FullyConnectedDescriptor& fullyConnectedDescriptor,
                                                        const ConstTensor& weights,
                                                        const Optional<ConstTensor>& biases,