WIP! Do not use in production code!

This code compress xml file/files under a given path into the single BLOB that conforms with the requirements for the KZG BLOB described HERE.

It uses DEFLATE compression algorithm. After compressing the file it cut received Vec<u8> into 31 byte long chunks and append 0 or 1 at the beginning of each. It appends 1 if it's the last chunk in the processed file and 0 for all the other cases.