feat: add an HTTP server to enable users to monitor status updates via status bars or other UI components.

[cmsax]

Users now can monitor status updates in status bar via xbar extension or other UI components.

demo xbar extension:

progress_monitor.1s.sh:

#!/bin/bash
curl -s "http://x.x.x.x:19999/desc"

status bar demo:

[schollz]

Awesome thanks!