Feature Request: Add autonomous wallet creation (createWallet)

[aite550659-max]

Summary

AI agents often need to create new wallets on the fly — without an existing funded account. This is useful for:

• Multi-agent systems where each agent spawns its own wallet
• Autonomous sub-accounts created programmatically
• Testing/dev workflows needing disposable wallets

Proposed Feature

Add a createWallet() function that generates a fresh keypair:

import { createWallet } from 'hedera-agent-kit';

const wallet = createWallet();
console.log(wallet.accountId);   // Derived from public key
console.log(wallet.publicKey);
console.log(wallet.privateKey);

Reference Implementation

I've published a lightweight implementation at @aite550659/hedera-agent-wallet (9 KB, 1 dependency).

Happy to contribute a PR if this would be valuable for the official kit.

Use Case: Agent Trust Protocol (ATP)

We're building ATP — a protocol for AI agent ownership and trust on Hedera. Autonomous wallet creation is essential for agents that need economic agency without human intervention for each wallet.

cc @piotrswierzy @jaycoolh