IVGCVSW-7555 Restructure Delegate

* New folders created:
  * common is for common code where TfLite API is not used
  * classic is for existing delegate implementations
  * opaque is for new opaque delegate implementation,
  * tests is for shared between existing Delegate and Opaque Delegate which have test utils to work which delegate to use.
* Existing delegate is built to libarmnnDelegate.so and opaque delegate is built as libarmnnOpaqueDelegate.so
* Opaque structure is introduced but no API is added yet.
* CmakeList.txt and delegate/CMakeList.txt have been modified and 2 new CmakeList.txt added
* Rename BUILD_ARMNN_TFLITE_DELEGATE as BUILD_CLASSIC_DELEGATE
* Rename BUILD_ARMNN_TFLITE_OPAQUE_DELEGATE as BUILD_OPAQUE_DELEGATE

Signed-off-by: Teresa Charlin <teresa.charlinreyes@arm.com>
Change-Id: Ib682b9ad0ac8d8acdc4ec6d9099bb0008a9fe8ed
diff --git a/delegate/test/PreluTest.cpp b/delegate/test/PreluTest.cpp
new file mode 100644
index 0000000..40bf1dd
--- /dev/null
+++ b/delegate/test/PreluTest.cpp
@@ -0,0 +1,134 @@
+//
+// Copyright © 2021, 2023 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "PreluTestHelper.hpp"
+
+#include <armnn_delegate.hpp>
+
+#include <flatbuffers/flatbuffers.h>
+#include <tensorflow/lite/interpreter.h>
+#include <tensorflow/lite/kernels/register.h>
+#include <tensorflow/lite/model.h>
+#include <schema_generated.h>
+#include <tensorflow/lite/version.h>
+
+#include <doctest/doctest.h>
+
+namespace armnnDelegate {
+
+void PreluFloatSimpleTest(std::vector <armnn::BackendId>& backends, bool isAlphaConst, bool isDynamicOutput = false) {
+    std::vector<int32_t> inputShape { 1, 2, 3 };
+    std::vector<int32_t> alphaShape { 1 };
+    std::vector<int32_t> outputShape { 1, 2, 3 };
+
+    if (isDynamicOutput)
+    {
+        outputShape.clear();
+    }
+
+    std::vector<float> inputData = { -14.f, 2.f, 0.f, 1.f, -5.f, 14.f };
+    std::vector<float> alphaData = { 0.5f };
+    std::vector<float> expectedOutput = { -7.f, 2.f, 0.f, 1.f, -2.5f, 14.f };
+
+    PreluTest(tflite::BuiltinOperator_PRELU,
+              ::tflite::TensorType_FLOAT32,
+              backends,
+              inputShape,
+              alphaShape,
+              outputShape,
+              inputData,
+              alphaData,
+              expectedOutput,
+              isAlphaConst);
+}
+
+TEST_SUITE("Prelu_CpuRefTests")
+{
+
+TEST_CASE ("PreluFp32SimpleConstTest_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuRef };
+    PreluFloatSimpleTest(backends, true);
+}
+
+TEST_CASE ("PreluFp32SimpleTest_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuRef };
+    PreluFloatSimpleTest(backends, false);
+}
+
+TEST_CASE ("PreluFp32SimpleConstDynamicTest_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuRef };
+    PreluFloatSimpleTest(backends, true, true);
+}
+
+TEST_CASE ("PreluFp32SimpleDynamicTest_CpuRef_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuRef };
+    PreluFloatSimpleTest(backends, false, true);
+}
+
+} // TEST_SUITE("Prelu_CpuRefTests")
+
+TEST_SUITE("Prelu_CpuAccTests")
+{
+
+TEST_CASE ("PreluFp32SimpleConstTest_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuAcc };
+    PreluFloatSimpleTest(backends, true);
+}
+
+TEST_CASE ("PreluFp32SimpleTest_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuAcc };
+    PreluFloatSimpleTest(backends, false);
+}
+
+TEST_CASE ("PreluFp32SimpleConstDynamicTest_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuAcc };
+    PreluFloatSimpleTest(backends, true, true);
+}
+
+TEST_CASE ("PreluFp32SimpleDynamicTest_CpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::CpuAcc };
+    PreluFloatSimpleTest(backends, false, true);
+}
+
+} // TEST_SUITE("Prelu_CpuAccTests")
+
+TEST_SUITE("Prelu_GpuAccTests")
+{
+
+TEST_CASE ("PreluFp32SimpleConstTest_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::GpuAcc };
+    PreluFloatSimpleTest(backends, true);
+}
+
+TEST_CASE ("PreluFp32SimpleTest_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::GpuAcc };
+    PreluFloatSimpleTest(backends, false);
+}
+
+TEST_CASE ("PreluFp32SimpleConstDynamicTest_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::GpuAcc };
+    PreluFloatSimpleTest(backends, true, true);
+}
+
+TEST_CASE ("PreluFp32SimpleDynamicTest_GpuAcc_Test")
+{
+    std::vector<armnn::BackendId> backends = { armnn::Compute::GpuAcc };
+    PreluFloatSimpleTest(backends, false, true);
+}
+
+} // TEST_SUITE("Prelu_GpuAccTests")
+
+}
\ No newline at end of file