Kewei

Caplin: beacon committee subscription api

2

This pr implements following beacon api https://ethereum.github.io/beacon-APIs/#/Validator/prepareBeaconCommitteeSubnet Steps: 1. once receive committee subscription request, record this subscription info associated with validator index. 2. if `isAggregator` flag is on, prepare internal...

https://github.com/ethereum/consensus-specs/tree/dev/specs/electra https://eips.ethereum.org/EIPS/eip-7251

Move subscription things out of sentinel

1

- new module `P2PManager` in `cl/p2p/*` to manage p2p things - new module `GossipManager` in `cl/phase1/network/gossip/*` to manage gossip subscriptions - gradually retire sentinel module