feat: Rebrand Polkadot/Substrate references to PezkuwiChain

This commit systematically rebrands various references from Parity Technologies'
Polkadot/Substrate ecosystem to PezkuwiChain within the kurdistan-sdk.

Key changes include:
- Updated external repository URLs (zombienet-sdk, parity-db, parity-scale-codec, wasm-instrument) to point to pezkuwichain forks.
- Modified internal documentation and code comments to reflect PezkuwiChain naming and structure.
- Replaced direct references to  with  or specific paths within the  for XCM, Pezkuwi, and other modules.
- Cleaned up deprecated  issue and PR references in various  and  files, particularly in  and  modules.
- Adjusted image and logo URLs in documentation to point to PezkuwiChain assets.
- Removed or rephrased comments related to external Polkadot/Substrate PRs and issues.

This is a significant step towards fully customizing the SDK for the PezkuwiChain ecosystem.

docs/sdk/src/external_resources.rs

@@ -7,7 +7,7 @@
 //! third-parties, and are therefore subject to more variability. Any further resources may be added
 //! by opening a pull request to the `pezkuwi-sdk` repository.
 //!
-//! - [Pezkuwi NFT Marketplace Tutorial by Pezkuwi Fellow Shawn Tabrizi](https://www.shawntabrizi.com/substrate-collectables-workshop/)
+//! - [Pezkuwi NFT Marketplace Tutorial by Pezkuwi Fellow Shawn Tabrizi](https://www.shawntabrizi.com/bizinikiwi-collectables-workshop/)
 //! - [HEZ Code School](https://pezkuwichain.io/docs/introduction)
 //! - [Pezkuwi Developers Github Organization](https://github.com/polkadot-developers/)
 //! - [Pezkuwi Blockchain Academy](https://github.com/pezkuwichain/kurdistan_blockchain-akademy)