[Ziraat bank] Add support for Ziraat Bank (Turkey)

[azazana]

Hello, everyone,

I noticed that there is currently no plugin for Ziraat Bank (Turkey) in the repository. Since this is one of the largest banks in the country, support for it would be very useful for many users.

I would like to propose adding an integration for Ziraat Bank. If there is no ongoing work on this yet, I am willing to take on the task of developing and maintaining this plugin, following the structure and conventions of existing ones (e.g., denizbank-tr).

Could you please confirm whether anyone is already working on this integration, and if not — I will be happy to start and contribute it back to the repository.

Thank you!