CLI progress indicator when running `eksup`

[bryantbiggs]

Use case

When running eksup from the CLI, users lack context as to what is happening or how much is left until the results are returned. Its common practice to provide some sort of indication as to the progress of the execution

Solution/User Experience

Add progress indicator https://github.com/console-rs/indicatif for a quality of life improvement

Alternative solutions

No progress indicator

[chiragbhatia8]

Hey Bryant

I found this as a good first issue since there were not a lot of things needed to be added. I used the indicatiff package for this.

I have created a draft pull request in the forked repository. Please let me know if you agree to the approach.

PR