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/bin/utils/chain-spec-builder/tests/expected/doc/create_default.json

@@ -0,0 +1,37 @@
+{
+  "name": "Custom",
+  "id": "custom",
+  "chainType": "Live",
+  "bootNodes": [],
+  "telemetryEndpoints": null,
+  "protocolId": null,
+  "properties": {
+    "tokenDecimals": 12,
+    "tokenSymbol": "UNIT"
+  },
+  "codeSubstitutes": {},
+  "genesis": {
+    "runtimeGenesis": {
+      "config": {
+        "babe": {
+          "authorities": [],
+          "epochConfig": {
+            "allowed_slots": "PrimaryAndSecondaryVRFSlots",
+            "c": [
+              1,
+              4
+            ]
+          }
+        },
+        "balances": {
+          "balances": [],
+          "devAccounts": null
+        },
+        "bizinikiwiTest": {
+          "authorities": []
+        },
+        "system": {}
+      }
+    }
+  }
+}