UCM14 — sequence/const mapping

The bounded sequence maps to a std::array but that is very heavy in terms of memory management. In a lot of use cases a sequence bound is set to limit the size, but by mapping it to a std::array the result is that the maximum is allocated directly in memory. IDL to C+11 doesn't require this, it maps to a distinct type that supports the bound, but not to a std::array. Would recommend to update this mapping to match with IDL to C+11

Also a constant is mapped to const, in a lot of cases it can be mapped to a constexpr, which is even better, see IDL to C++11