Initial rebrand: @polkadot -> @pezkuwi (14 packages)

- Package namespace: @polkadot/* -> @pezkuwi/*
- Repository: polkadot-js/common -> pezkuwichain/pezkuwi-common
- Author: Pezkuwi Team <team@pezkuwichain.io>

Core packages:
- @pezkuwi/util (utilities)
- @pezkuwi/util-crypto (crypto primitives)
- @pezkuwi/keyring (account management)
- @pezkuwi/networks (chain metadata)
- @pezkuwi/hw-ledger (Ledger hardware wallet)
- @pezkuwi/x-* (10 polyfill packages)

Total: 14 packages
Upstream: polkadot-js/common v14.0.1

packages/util/src/format/formatDate.spec.ts

@@ -0,0 +1,17 @@
+// Copyright 2017-2025 @polkadot/util authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+/// <reference types="@polkadot/dev-test/globals.d.ts" />
+
+import { formatDate } from './index.js';
+
+describe('formatDate', (): void => {
+  it('formats a known date into the correct format', (): void => {
+    const date = new Date(Date.UTC(2020, 1, 15, 11, 14, 34));
+
+    // make this test-locale agnostic
+    date.setTime(date.getTime() + date.getTimezoneOffset() * 60 * 1000);
+
+    expect(formatDate(date)).toEqual('2020-02-15 11:14:34');
+  });
+});