## Random lib for xoshiro

## Acknowledgements
the xoshinro rng code is copied from
[atframe_utils](https://github.com/atframework/atframe_utils/blob/master/include/random/random_xoshiro_core.h) and
[atframe_utils#tests](https://github.com/atframework/atframe_utils/blob/master/test/case/random_test.cpp)
