Please export `PsbtInputExtended` and `PsbtOutputExtended`

[koa202405]

trafficstars

So that I can remove following code in my project

// Following types are not exported by BitcoinJS, so they need to be manually extracted
export type PsbtInputExtended = Parameters<
  typeof bitcoin.Psbt.prototype.addInput
>[0];

export type PsbtOutputExtended = Parameters<
  typeof bitcoin.Psbt.prototype.addOutput
>[0];