tpi - verifying checksum notification enhancement.

[Xatinni]

Is it possible to add a notification during the verifying checksum phase, eg. after an image has been written. example: in the attached screenshot it took over 4 minutes for checksum verification phase to complete, during this time users
may think tpi has hung as there is no notification or visual indication on what's happening.

[svenrademakers]

I agree the user cues are very minimal at the moment. The TPI tool should show something like 'verifying checksum ..'

[gjrtimmer]

@Xatinni can this be fixed in the tpi command? If so could you provide a PR?