Show progress when checking the repo

[dineshba]

Currently, we are not showing any progress while checking the files. It would be great if we see some progress bar (or simple log message).

Reason: I am having it as pre-push hook, when i do git push it is taking around 30-60 seconds to show response. I was checking internet connection and other things to understand why it takes time to push.

[harinee]

We should also explore why it takes so long to scan, and try to improve the performance. @dineshba could you open a separate issue for that with some details about size of the project, frequency at which such issue is seen etc.?

[dineshba]

Created seperate issue to track the performance https://github.com/thoughtworks/talisman/issues/152. We can use this issue to track the showing progress