Create pseudo devices: tty, random, urandom, zero, full, null

```go
cmd := goclone.Command(...)
cmd.CreatePseudoDevices = true
```
If I understand correctly - this is my mistake. Not needed. I removed this code in https://github.com/max107/goclone/commit/d36141bdcf464bb79544d0b37a3a4329a25fe2ef