R1:f3f1f9dc577a

Allow "drydock.blueprint.edit" to create blueprints

Summary:
Depends on D18848. Ref PHI243. This puts a bit of logic up front to figure out the blueprint type before we actually start editing it.

This implementation is a little messy but it keeps the API clean. Eventually, the implementation could probably go in the TransactionTypes so more code is shared, but I'd like to wait for a couple more of these first.

This capability probably isn't too useful, but just pays down a bit of technical debt from the…