message: feat(utxo-lib): add createTransactionFromHex()
  Some code paths love to use hex strings so let's add a convenience
  method
  Issue:
diff: @@ -28,6 +28,10 @@ export function createTransactionFromBuffer(buf: Buffer, network: Network): Tran
  throw new Error(`invalid network`);
  }
  +export function createTransactionFromHex(hex: string, network: Network): Transaction {
  + return createTransactionFromBuffer(Buffer.from(hex, 'hex'), network);
  +}
  +
  export function createTransactionBuilderForNetwork(network: Network): TransactionBuilder {
  switch (getMainnet(network)) {
  case networks.bitcoin:
  