Badeline Chasers spawn trigger

This is probably a good candidate for Everest inclusion.

A trigger to spawn Badeline Chasers that start at a specified node and inherit a configuration from the trigger.

*Requested by taco360#1926*

The issue does not name files, tests, or an entry point. Start by locating existing trigger implementations and the Badeline Chasers code, then determine how a trigger could specify a starting node and pass configuration. Done would mean the requested trigger works in the relevant game scenarios, but no validation path is given.

Written by the indexing model from the issue text.