This commit adds a small utility that allows a consumer to create
instances of the stateful occurrence tracker that have a small set
of generic tools for tracking and responding to occurrences of
something.

Example usecases:
- Track errors accrued for a given network request (that is not
implicitly retried, for example)
- Track clicks on a UI element that doesn't need to be global,
but is too much to be within a component
- Respond to odd occurrences one way, even occurrences differently;
without adding that boilerplate to the component