PTS listing or custom port support

[Twistedsnail]

It would be really helpful if we could list /dev/pts/X ports. They support the same interface and would be easy to implement.
Another option to quickly achieve this is allowing the user to specify the port (just a text input?)

For more advanced users you could also add a port glob setting, maybe defaulting to:

• ^\/dev\/tty(USB|S|ACM)\d+$ on linux
• ^COM\d+$ on windows.

That way the user can filter their options (and add other ports not currently included).

For reference, my use-case is:

• Embedded project with a USB serial port
• Native/simulator project that uses the same code, but replaces the USB with a pseudo-terminal instead
  This allows the embedded and native projects to behave nearly identically and is very helpful vs stdin.

[gcampbell-msft]

@Twistedsnail Thanks for the feature request! We've taken note of this and will add it to the backlog.