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.

bizinikiwi/client/basic-authorship/README.md

@@ -0,0 +1,31 @@
+Basic implementation of block-authoring logic.
+
+# Example
+
+```rust
+// The first step is to create a `ProposerFactory`.
+let mut proposer_factory = ProposerFactory::new(client.clone(), txpool.clone(), None);
+
+// From this factory, we create a `Proposer`.
+let proposer = proposer_factory.init(
+	&client.header(client.chain_info().genesis_hash).unwrap().unwrap(),
+);
+
+// The proposer is created asynchronously.
+let proposer = futures::executor::block_on(proposer).unwrap();
+
+// This `Proposer` allows us to create a block proposition.
+// The proposer will grab transactions from the transaction pool, and put them into the block.
+let future = proposer.propose(
+	Default::default(),
+	Default::default(),
+	Duration::from_secs(2),
+);
+
+// We wait until the proposition is performed.
+let block = futures::executor::block_on(future).unwrap();
+println!("Generated block: {:?}", block.block);
+```
+
+
+License: GPL-3.0-or-later WITH Classpath-exception-2.0