FEAT: Updated ZIP decoder

* Refactored decoder so it is using central directory structure
* Added decode/info refinement used to resolve just the info about files without decompressing
* Added access to decompress-file function which may be used to decompress single file using info from the info records

Initial ZIP decoder was just traversing the file searching for the ZIP related structures. But some ZIP files (like created on macOS) does not provide valid informations in local headers and central header must be used, as it is with this update.

Author: Oldes