Allow with-style streaming APIs for communicating with a running program

[Joannis]

No description provided.

[giantrobotpilot]

This did not work for me. Can you give me a usage example? I implemented it like the following and I'm not sure it's correct.

do {
            try await client?.withExecutingCommand("calibration", inShell: false, perform: { inbound, outbound in
                var inboundStream = inbound.makeAsyncIterator()
                while let blob = try await inboundStream.next() {
                    switch blob {
                    case .stdout(let stdout):
                        let string = String(buffer: stdout)
                        print("stdout: \(string)")
                    case .stderr(let stderr):
                        print("stderr: \(String(buffer: stderr))")
                    }
                }
                 
                var buf = ByteBuffer()
                buf.setString("getCalibStatus", at: 0)
                try await outbound.write(buf)
            })
        } catch {
            self.error = error
            print("error: \(error)")
        }

One thing I noticed was that if I changed 'inShell' to 'true' I could see the command that was input and it was "calibration;exit" instead of "calibration." I'm not sure if that's relevant in this case.

[Joannis]

I've updated it to include a less invasive API. This should allow you to control the whole TTY now