Breakpoint Nodes Should Support Configuration

[tcjennings]

Currently, a breakpoint node has no configuration options and it does not access manifests.

A breakpoint node should have a configuration spec with

• timeout: a datetime or timedelta object that indicates, if set, that a breakpoint should auto-succeed following some duration or at some specific time. This could support workflows that "might" need review but waiting for that review should not unduly delay the campaign progress.