Libzip buffer

[vaguue]

DuckX is using miniz library, which is unable to parse zip archive in-memory (from char*), hence I rewrote some pieces of code using libzip, and extended functionality of save method with capability to save to another files. The code is quite raw and slightly tested, but I decided to open pull request now in order to discuss upcoming changes. The most unsolved issue is an addition of libzip library using cmake (I don't know how to do it).

[vaguue]

Maybe it's a good idea to add a capability to save a data in an input buffer?

[amiremohamadi]

thanks for Your PR. DuckX used to use libzip, but the reason for switching to kuba's zip library was keeping DuckX as minimal as possible. libzip is excellent but that's huge, we don't need the whole functionality also. at this point, I'm thinking of hacking kuba's zip library or implementing a part of miniz inside DuckX.