Feature request: Provide websocket support via qemu

[cdrage]

QEMU has built-in websocket support, and podman machine uses qemu.

It would be highly beneficial if macadam could provide somehow websocket support by passing in:

      '-serial',
      `websocket:127.0.0.1:${websocketPort},server,nowait`,

To the QEMU command.

This allows tools such as Podman Desktop to easily consume / use, as we already have "xterm" addon / UI support as seen as by one of our extensions: https://github.com/podman-desktop/extension-bootc/blob/main/packages/frontend/src/lib/disk-image/DiskImageDetailsVirtualMachine.svelte#L66

Unsure with regards to the implementation of this, but this could be a good way for node/js/ts applications such as Podman Desktop to easily interact with VM's brought up by podman machine.

[cfergeau]

This would also need to be added to vfkit on top of crc-org/vfkit#113, and to hyperv if that's possible at all.