Implement a more gradual uninstallation progress flow

[buresdv]

At the moment, when uninstalling a package, a spinner with an indetermined progress is applied to the package and shown to the user. The uninstall process exeutes a non-streamed shell function.

Idea

1. Convert the uninstall function to use the streamed version of shell
2. Like the install function, parse each line and react to it
3. Instead of the indetermined progress spinner, use a round progress tracker instead: https://sarunw.com/posts/swiftui-circular-progress-bar/ or a Gauge with accessoryCircularCapacity style