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/revive/fixtures/contracts/Callee.sol

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: Apache-2.0
+pragma solidity >=0.8.0;
+
+contract Callee {
+    uint64 public stored;
+
+    function echo(uint64 _data) external pure returns (uint64 data) {
+        data = _data;
+    }
+
+    function whoSender() external view returns (address) {
+        return msg.sender;
+    }
+
+    function store(uint64 _data) external {
+        stored = _data;
+    }
+
+    function revert() public pure returns (uint64) {
+        require(false, "This is a revert");
+        return 42; // never reached
+    }
+
+    function invalid() public pure {
+        assembly {
+            invalid()
+        }
+    }
+
+    function stop() public pure {
+        assembly {
+            stop()
+        }
+    }
+}