fix submodule url

Change license to BSD 2 clauses.

[CMake] Switch to C++14

As include/hpp/util/serialization.hh use `std::enable_if_t`, which is
only available in C++ >= 14

Serialization

[CMake] tests require boost headers

ref https://git.openrobots.org/projects/robotpkg/repository/robotpkg/revisions/d1814179abca3565600cb489858fec6421934e38/diff

[ROS] Add package.xml