FPR rule commandline tool

This pull request adds a new commandline tool which generates FPR rules. It immediately applies the change to the local database, and also emits SQL to stdout that can be captured to reapply the change at a later point in time. That new SQL can be added to `fpr_dev.sql` files, or applied to the FPR server.

This is still WIP, so please request features and etc.!

Planned features:

* Add new FPR formats.
* Name linked objects by their description instead of UUID.