Setup project integrate shamir

[hadasz]

WIP of integrating shamir's but code amount has far exceeded amount appropriate for review. Still need to set up JSDoc. So far - this is a rewrite of existing shamir javascript implementation (https://github.com/amper5and/secrets.js/ ) that uses react-native-securerandom for the random number generator, and focuses on emphasizing and explaining the concepts of Galois Fields of characteristic 2, the fields from which coefficients are randomly generated.