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/react-components/src/util/toShortAddress.ts

@@ -0,0 +1,12 @@
+// Copyright 2017-2025 @polkadot/react-components authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { AccountId, AccountIndex, Address } from '@polkadot/types/interfaces';
+
+export function toShortAddress (_address?: AccountId | AccountIndex | Address | string | null | Uint8Array): string {
+  const address = (_address || '').toString();
+
+  return (address.length > 11)
+    ? `${address.slice(0, 5)}…${address.slice(-5)}`
+    : address;
+}