Feature: Make streams implement the existing Go io interfaces.

# Description
In order to make bindings more Go idiomatic we should make streams implement the `io.Reader`, `io.Writer` and `io.Closer` interfaces. This would enable more seamless integration with existing Go functions.

### Example

For the following wit type `stream` the types should implement the following:

```go
// StreamReader implements io.ReadCloser
var _ io.ReadCloser = (*witTypes.StreamReader[uint8])(nil)

// io.ReadCloser
type ReadCloser interface {
Read(p []byte) (n int, err error)
Close() error
}

// StreamWriter implements io.WriteCloser
var _ io.WriteCloser = (*witTypes.StreamWriter[uint8])(nil)

// io.WriteCloser
type WriteCloser interface {
Write(p []byte) (n int, err error)
Close() error
}
```

This would allow you to for example, encode json straight onto the stream:
```go
// Create stream
tx, rx := foo.MakeStreamU8()

// Encode json
err := son.NewEncoder(tx).Encode(map[string]string{
"foo": "bar",
})
...
```

Inizia individuando i tipi StreamReader e StreamWriter generati per stream e leggi le operazioni di stream esistenti. Controlla come questi tipi gestiscono attualmente la lettura, la scrittura e la chiusura, quindi verifica che soddisfino le interfacce io.Reader, io.Writer, io.ReadCloser e io.WriteCloser e che possano essere passati all’encoder JSON mostrato nell’issue.

Scritto dal modello di indicizzazione a partire dal testo della issue.