[TASK] Slashing and governance

[drewstone]

Overview

We let Blueprint developers define slashing, but we should also retain control to veto and cancel slashes at the governance/network level. This is useful to prevent truly malicious behavior from happening as well as to ensure that there is a process for forgiving slashing conditions in the event the network wants to (early launch of the product, disputes have been resolved, payments for downtime organized, etc. whatever it may be).

The logic should resemble similarly to validator slashing, where the governance system can propose to cancel it within a window or alternate time tracking mechanism.