* Allow the application to process events in parallel
there is a main thread that tracks incoming messages, but then it spawns goroutines to actually process each slot so that they can happen concurrently.
* Control knownGaps in existing test
* Use Interfaces for different fork version
Use interfaces for `SignedBeaconBlock` and `BeaconState`, this allows the application to determine the correct forked struct.
In the test we also use a switch condition to properly serve the correct mimics.
* Utilize new ipld-ethcl-db repository
* Add final tests
* Update timeout and secret
* Update token
* Update docker compose
* Update expected inserts
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