docs: add jito bundle example code

examples/jito-bundles/README.md

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+## Jito Bundles with Kora
+
+This sample code will help you get started with Jito Bundles with Kora.
+
+## Full Demo
+
+A full demo of Kora is available [here](https://launch.solana.com/docs/kora/guides/jito-demo).
+
+## Sample Output
+
+```bash
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+KORA JITO BUNDLE DEMO
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+[1/5] Initializing clients
+  → Kora RPC: http://localhost:8080/
+  → Solana RPC: https://api.mainnet-beta.solana.com
+
+[2/5] Setting up keypairs
+  → Sender: BYJVBqQ2xV9GECc84FeoPQy2DpgoonZQFQu97MMWTbBc
+  → Kora signer address: 3Z1Ef7YaxK8oUMoi6exf7wYZjZKWJJsrzJXSt1c3qrDE
+
+[3/5] Creating bundle transactions
+  → Blockhash: 7HZUaMqV...
+  → Tip account: 96gYZGLn...
+  → Transaction 1: Kora Memo "Bundle tx #1"
+  → Transaction 2: Kora Memo "Bundle tx #2"
+  → Transaction 3: Kora Memo "Bundle tx #3"
+  → Transaction 4: Kora Memo "Bundle tx #4" + Jito tip
+  ✓ 4 transactions created for bundle
+
+[4/5] Signing bundle with Kora
+  ✓ All transactions signed by user
+  ✓ Bundle co-signed by Kora
+  → 4 transactions signed
+
+[5/5] Submitting bundle to Jito
+  ✓ Bundle submitted to Jito block engine
+  → Bundle UUID: 8f4a3b2c-1d5e-6f7a-8b9c-0d1e2f3a4b5c
+  ⏳ Polling bundle status...
+  ✓ Bundle landed (simulated for demo)
+
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+SUCCESS: Bundle confirmed on Solana
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+Bundle UUID:
+8f4a3b2c-1d5e-6f7a-8b9c-0d1e2f3a4b5c
+```

examples/jito-bundles/client/package.json

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+{
+  "name": "client",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "tsx src/index.ts"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "packageManager": "pnpm@10.14.0",
+  "dependencies": {
+    "@solana-program/memo": "^0.10.0",
+    "@solana-program/system": "^0.10.0",
+    "@solana/kit": "^5.3.0",
+    "@solana/kora": "0.2.0-beta.1"
+  },
+  "devDependencies": {
+    "@types/node": "^25.0.3",
+    "tsx": "^4.21.0",
+    "typescript": "^5.9.3"
+  }
+}