IVGCVSW-2508 Add no-op factory implementations and layer for Gather operator
 * Added GatherQueueDescriptor to WorkloadData
 * Added CreateGather function in WorkloadFactory.hpp
 * Added stub implementation of the CreateGreater function in workload factories
 * Added GatherLayer stub implementation
 * Added AddGatherLayer to Network
 * Added IsGatherSupported to LayerSupportBase

Change-Id: I0408fd54e88a7d4e3d9e1c2811a9323f0da52a04
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 755f408..9651f07 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -202,6 +202,8 @@
     src/armnn/layers/FloorLayer.cpp
     src/armnn/layers/FullyConnectedLayer.hpp
     src/armnn/layers/FullyConnectedLayer.cpp
+    src/armnn/layers/GatherLayer.cpp
+    src/armnn/layers/GatherLayer.hpp
     src/armnn/layers/GreaterLayer.cpp
     src/armnn/layers/GreaterLayer.hpp
     src/armnn/layers/InputLayer.hpp