Feature Rquest: ament_cmake_clang_tidy, specify --header-filter and --jobs options to ament_clang_tidy

It would be good if you could do this in your CMakeLists.txt for your package if you wanted to use a different header filter, or speed up clang processing.
```
cmake_host_system_information(RESULT CONCURRENT_JOBS QUERY NUMBER_OF_PHYSICAL_CORES)
set(ament_cmake_clang_tidy_HEADER_FILTER ".*")
set(ament_cmake_clang_tidy_JOBS "${CONCURRENT_JOBS}")
```