Build even better bridges

[acolytec3]

A continuation of #605

We should think about building a robust bridge application for a few different use cases within Ultralight

• Push updated HistoricalSummaries into the Beacon Network (pulled from the getHistoricalSummaries endpoint on a Lodestar fullnode)
• Seed history content using the E2HS files to keep chain history fully available
• Build a bridge to support gossiping head state data as this spec gets finalized

Lots of inspiration can be found here, here, and here.

I don't think we necessarily need to go the route of trin-bridge that is built around an actual Trin node though that could be an option.