Add Statistical Tests form random.hpp

As a user I would like to validate the functionality of the random number generator using a statistical test method such as diehard so that I can be confident the library is adequately generating random input for secret values.

different platforms handle random number generation differently and as a safety feature we should add statistical tests that can verify the functionality of our internal random number process on a variety of hardware, operating systems, and compilers.

Start by inspecting random.hpp and the internal random-number generation path it exposes. Research the proposed statistical method, such as Diehard, and determine how tests could cover different platforms, operating systems, and compilers. Done means a defined, repeatable test scope exists and the random generation behavior is validated across the intended environments.

Written by the indexing model from the issue text.