peerdas-devnet-4 specs

Peerdas-devnet-4 is live as of Feb 7! https://peerdas-devnet-4.ethpandaops.io/

Dora: https://dora.peerdas-devnet-4.ethpandaops.io/

Note: PeerDAS is activated at the FULU_FORK_EPOCH

Validator custody - This is up to clients to decide if they would like to implement it. It isn't a requirement for devnets.