Add implementations of `MD2` and `MD4` to module `:library:md` This will allow [MACs](https://github.com/KotlinCrypto/MACs) to implement `HmacMD2` and `HmacMD4`
Add implementations of
MD2andMD4to module:library:mdThis will allow MACs to implement
HmacMD2andHmacMD4