Enable wildcards in pubsub event specifications

Enable wildcards in pubsub event specifications.

For example:

"TxTracking.*.kickoff" would grab all the kickoff events.

If this is too hard to implement, or not considered necessary, then require that each '.*.' match one-to-one with a '.[something].' in the event specification.

Start by locating the pubsub event specification entry points and any existing matching tests in the repository. Compare the requested "TxTracking.*.kickoff" behavior with the proposed one-to-one wildcard alternative; done means event subscriptions consistently match the intended wildcard specifications and the behavior is covered by tests.

Written by the indexing model from the issue text.