[BUG] The unit test module failed to compile

Hi.
This C++ project template is useful to me. Thanks!

Unfortunately, the unit test module failed to compile.
You may need to add the following to test/cmakelists.txt:
```cmake
  target_include_directories(
    ${test_name}_Tests
    PUBLIC ${CMAKE_SOURCE_DIR}/include
    PRIVATE ${CMAKE_SOURCE_DIR}/src
  )
```
