* 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
* Ensure that the node is synced at boot time
* Update test + add logic for checking skipped slots
* Update boot check
* Add skip_sync to config.
* Update a test so it fails
This Commit contains the following:
* Graceful shutdowns.
* Handling all incoming SSE events for reorgs, finalizations, and head.
The structure of the `BeaconClient` has drastically changed and generics are used.
