Add Kuznetzov-Tsybakov stego encoder for images #3
Description
This encoder is based on https://ieeexplore.ieee.org/document/7025857 paper which provides theoretical foundation on the method.
Implementation is already done in Rust - available here https://github.com/baymax42/kuznetsov-tsybakov-stego. Goal is to adapt the solution to the ptero-cli.
Pre-requisite for this task is the general refactor for supporting new data sources as this method hides arbitrary data inside images.