Implement a tool to reclaim rolling history mode disk space

[itkach]

Clarification and motivation

In rolling history mode tezos preserves limited chain history. However data is not automatically deleted and disk space is not reclaimed. Current way to achieve that is to export snapshot and then import it. It would be nice to have a utility that performs all the necessary steps in a way that minimizes node downtime.

Acceptance criteria

tezos-baking package provides a command line utility to reclaim disk space

[pasqu4le]

For context, on this topic there are:

• an Agora thread
• an upstream issue