Move ComputeTest,GraphicsTest,RenderTest and Std140Debug to the tests folder

Also renamed NazaraUnitTests to UnitTests

tests/UnitTests/Engine/Core/ObjectRefTest.cpp

@@ -0,0 +1,44 @@
+#include <Nazara/Core/ObjectRef.hpp>
+#include <catch2/catch_approx.hpp>
+#include <catch2/catch_test_macros.hpp>
+
+class Test : public Nz::RefCounted
+{
+};
+
+SCENARIO("ObjectRef", "[CORE][OBJECTREF]")
+{
+	GIVEN("A ObjectRef")
+	{
+		Nz::ObjectRef<Test> objectRef;
+
+		WHEN("We have two objectRef handling the same object")
+		{
+			Test test;
+
+			objectRef = &test;
+			Nz::ObjectRef<Test> otherRef(&test);
+
+			THEN("Pointers the same")
+			{
+				REQUIRE(objectRef.IsValid());
+				REQUIRE(otherRef.IsValid());
+			}
+
+			objectRef.Reset(nullptr);
+		}
+
+		WHEN("We assign it to a simple font")
+		{
+			Test test;
+
+			THEN("Release suppress the reference to the object")
+			{
+				objectRef.Reset(&test);
+				objectRef.Release();
+
+				REQUIRE(!objectRef.IsValid());
+			}
+		}
+	}
+}