Lightweight component wrapper around jackdaw Streams (DSL) processor app.

Lightweight component wrapper around jackdaw producer client.

Adds a protocol-based wrapper for interacting with KV state stores.
Includes some store-related utilities as well.
Nothing really jackdaw-specific here, but including in this library anyway.
Useful when dealing with explicit state stores using the lower-level Processor API
(for example via the Streams `transform` method).

A Processor component that simply consumes from one or more topics and calls a callback for each record.
Like `Processor` it takes `app-config` and `topic-registry`.
Unlike `Processor` instead of a `topology-builder-fn` it takes:
`topic-kws`: a collection of keywords identifying topics to consume.
`callback-fn`: a function that's called for each record; it's passed a map with the keys [:k :v :component].

Some handy functions for use in the repl.