Challenge: Generate a Keypair

Now it is your turn! Write a function that generates a new Solana keypair and returns an object with the public key (as a base58 string) and a boolean indicating whether the keypair is valid.

Requirements

• Import Keypair from @solana/web3.js
• Generate a new keypair
• Return an object with publicKey (base58 string) and isValid (boolean)
• A keypair is valid if the public key is on the ed25519 curve