Add Pezkuwi SDK UI - Polkadot.js Apps clone

- Clone Polkadot.js Apps repository
- Update package.json with Pezkuwi branding
- Add Pezkuwi endpoint to production chains (wss://pezkuwichain.app:9944)
- Create comprehensive README for SDK UI
- Set up project structure with all packages

Next steps:
- Apply Kurdistan colors (Kesk, Sor, Zer, Spi + Black) to UI theme
- Replace logos with Pezkuwi branding
- Test build and deployment

pezkuwi-sdk-ui/packages/apps-config/src/api/spec/hyperbridge.ts

@@ -0,0 +1,12 @@
+// Copyright 2017-2025 @polkadot/apps-config authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { OverrideBundleDefinition } from '@polkadot/types/types';
+
+import { keccakAsU8a } from '@polkadot/util-crypto';
+
+const definitions: OverrideBundleDefinition = {
+  hasher: keccakAsU8a
+};
+
+export default definitions;