[C++ API] simplify code of Arguments; avoid memory copy (#13978)
[C++ API] simplify code of Arguments; avoid memory copy (#13978)


ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,pcmoritz/ray-1,pcmoritz/ray-1,pcmoritz/ray-1,ray-project/ray,pcmoritz/ray-1,pcmoritz/ray-1,ray-project/ray,ray-project/ray,pcmoritz/ray-1,pcmoritz/ray-1,pcmoritz/ray-1