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

tsconfig.json

@@ -0,0 +1,13 @@
+{
+  "extends": "./tsconfig.base.json",
+  "compilerOptions": {
+    "baseUrl": "./packages",
+    "composite": false
+  },
+  "include": [
+    "packages/**/src/**/*"
+  ],
+  "exclude": [
+    "**/node_modules/**/*"
+  ]
+}