Add test makefile for easy execution

src/Tools/Tests/Test.mk

@@ -0,0 +1,7 @@
+export PATH := $(HOME)/.cargo/bin/:$(PATH)
+
+test_cpp_out: always
+	@cargo build --manifest-path ../cpp_out/Cargo.toml --release 
+	@./../cpp_out/target/release/cpp_out
+
+always: ;