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/pezframe/asset-conversion/README.md

@@ -0,0 +1,25 @@
+# asset-conversion
+
+## A swap pallet
+
+This pallet allows assets to be converted from one type to another by means of a constant product formula.
+The pallet based is based on [Uniswap V2](https://github.com/Uniswap/v2-core) logic.
+
+### Overview
+
+This pallet allows you to:
+
+  - create a liquidity pool for 2 assets
+  - provide the liquidity and receive back an LP token
+  - exchange the LP token back to assets
+  - swap 2 assets if there is a pool created
+  - query for an exchange price via a new runtime call endpoint
+  - query the size of a liquidity pool.
+
+Please see the rust module documentation for full details:
+
+`cargo doc -p pezpallet-asset-conversion --open`
+
+### License
+
+License: Apache-2.0