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.

pezkuwi/node/subsystem-test-helpers/src/lib.rs

@@ -29,7 +29,7 @@ use pezkuwi_primitives::{ChunkIndex, Hash};
 
 use futures::{channel::mpsc, poll, prelude::*};
 use parking_lot::Mutex;
-use sp_core::testing::TaskExecutor;
+use pezsp_core::testing::TaskExecutor;
 
 use std::{
 	collections::VecDeque,

pezkuwi/node/subsystem-test-helpers/src/mock.rs

@@ -17,12 +17,12 @@
 use std::sync::Arc;
 
 use pezkuwi_node_subsystem::{ActivatedLeaf, BlockInfo};
-use sc_client_api::UnpinHandle;
-use sc_keystore::LocalKeystore;
-use sc_utils::mpsc::tracing_unbounded;
-use sp_application_crypto::AppCrypto;
-use sp_keyring::Sr25519Keyring;
-use sp_keystore::{Keystore, KeystorePtr};
+use pezsc_client_api::UnpinHandle;
+use pezsc_keystore::LocalKeystore;
+use pezsc_utils::mpsc::tracing_unbounded;
+use pezsp_application_crypto::AppCrypto;
+use pezsp_keyring::Sr25519Keyring;
+use pezsp_keystore::{Keystore, KeystorePtr};
 
 use pezkuwi_primitives::{AuthorityDiscoveryId, Block, BlockNumber, Hash, ValidatorId};