Add target for neo shared unit tests

Change-Id: I78e8985242025d456c0ad214a9293793857ec888
Signed-off-by: Konstanty Misiak <konstanty.misiak@intel.com>

shared/test/unit_test/test_mode.h

@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) 2020 Intel Corporation
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+#pragma once
+
+#include "shared/test/unit_test/tests_configuration.h"
+
+namespace NEO {
+constexpr TestMode defaultTestMode = TestMode::UnitTests;
+} // namespace NEO