IVGCVSW-2245 Add Minimum Layer and no-op Factory implementation

Change-Id: I03fa374fd9692d98257de709f8c3ad0a49c88b95
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 611e739..64116d4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -209,6 +209,8 @@
     src/armnn/layers/MemCopyLayer.cpp
     src/armnn/layers/MergerLayer.hpp
     src/armnn/layers/MergerLayer.cpp
+    src/armnn/layers/MinimumLayer.cpp
+    src/armnn/layers/MinimumLayer.hpp
     src/armnn/layers/MultiplicationLayer.hpp
     src/armnn/layers/MultiplicationLayer.cpp
     src/armnn/layers/NormalizationLayer.hpp