Function deriveCredentialsFromMnemonic

deriveCredentialsFromMnemonic(
mnemonic: string,
username: string,
): { password: string; seed: Uint8Array }
Derive GunDB credentials from mnemonic
Parameters
- mnemonic: string
  The BIP39 mnemonic
- username: string
  Username for derivation
Returns { password: string; seed: Uint8Array }
Credentials for GunDB