Add a hindu arabic to roman numerals converter
Compute tables goal is to reduce the cyclometric complexity of the converter
This code is refactored from the Smarty plugin shipped with Azhàr and Zed
to print numerals counters.
The lowercase string has been chosen.
This change doesn't contain a code to convert roman numerals into hindu
arabic numbers, as there is no use case established, but the compute
tables can help for that too.
Test Plan: Unit tests provided
Reviewed By: dereckson
Differential Revision: https://devcentral.nasqueron.org/D1599