IVGCVSW-5398 TfLiteDelegate: Implement the Quantization operators

 * Enabled quantization operators DEQUANTIZE and QUANTIZE.
 * Implemented unit tests for quantization operators.
 * Added utils function for checking if affine quantization.

Signed-off-by: Matthew Sloyan <matthew.sloyan@arm.com>
Change-Id: I84b5c75bda629d9234f5ed198b04f527705a54aa
diff --git a/delegate/CMakeLists.txt b/delegate/CMakeLists.txt
index 8149764..0a1a3e4 100644
--- a/delegate/CMakeLists.txt
+++ b/delegate/CMakeLists.txt
@@ -94,7 +94,9 @@
         src/test/ElementwiseBinaryTest.cpp
         src/test/ElementwiseBinaryTestHelper.hpp
         src/test/ElementwiseUnaryTest.cpp
-        src/test/ElementwiseUnaryTestHelper.hpp)
+        src/test/ElementwiseUnaryTestHelper.hpp
+        src/test/QuantizationTest.cpp
+        src/test/QuantizationTestHelper.hpp)
 
 add_executable(DelegateUnitTests ${armnnDelegate_unittest_sources})
 target_include_directories(DelegateUnitTests PRIVATE src)