chore(p2p): store received epoch quotes (#9064)

## Overview

Receive epoch quotes through the p2p client and add them to the store.
Testing this to see if it fixes a halt with x validators when
progression halts past the first epoch

yarn-project/p2p/src/client/index.ts

@@ -53,6 +53,7 @@ export const createP2PClient = async (
       peerId,
       txPool,
       attestationsPool,
+      epochProofQuotePool,
       l2BlockSource,
       proofVerifier,
       worldStateSynchronizer,

yarn-project/p2p/src/service/libp2p_service.ts

@@ -2,6 +2,7 @@ import {
   BlockAttestation,
   BlockProposal,
   type ClientProtocolCircuitVerifier,
+  EpochProofQuote,
   type Gossipable,
   type L2BlockSource,
   MerkleTreeId,
@@ -33,6 +34,7 @@ import { createLibp2p } from 'libp2p';
 
 import { type AttestationPool } from '../attestation_pool/attestation_pool.js';
 import { type P2PConfig } from '../config.js';
+import { type EpochProofQuotePool } from '../epoch_proof_quote_pool/epoch_proof_quote_pool.js';
 import { type TxPool } from '../tx_pool/index.js';
 import {
   DataTxValidator,
@@ -98,6 +100,7 @@ export class LibP2PService implements P2PService {
     private peerDiscoveryService: PeerDiscoveryService,
     private txPool: TxPool,
     private attestationPool: AttestationPool,
+    private epochProofQuotePool: EpochProofQuotePool,
     private l2BlockSource: L2BlockSource,
     private proofVerifier: ClientProtocolCircuitVerifier,
     private worldStateSynchronizer: WorldStateSynchronizer,
@@ -202,6 +205,7 @@ export class LibP2PService implements P2PService {
     peerId: PeerId,
     txPool: TxPool,
     attestationPool: AttestationPool,
+    epochProofQuotePool: EpochProofQuotePool,
     l2BlockSource: L2BlockSource,
     proofVerifier: ClientProtocolCircuitVerifier,
     worldStateSynchronizer: WorldStateSynchronizer,
@@ -291,6 +295,7 @@ export class LibP2PService implements P2PService {
       peerDiscoveryService,
       txPool,
       attestationPool,
+      epochProofQuotePool,
       l2BlockSource,
       proofVerifier,
       worldStateSynchronizer,
@@ -372,6 +377,10 @@ export class LibP2PService implements P2PService {
       const block = BlockProposal.fromBuffer(Buffer.from(message.data));
       await this.processBlockFromPeer(block);
     }
+    if (message.topic == EpochProofQuote.p2pTopic) {
+      const epochProofQuote = EpochProofQuote.fromBuffer(Buffer.from(message.data));
+      this.processEpochProofQuoteFromPeer(epochProofQuote);
+    }
 
     return;
   }
@@ -404,6 +413,11 @@ export class LibP2PService implements P2PService {
     }
   }
 
+  private processEpochProofQuoteFromPeer(epochProofQuote: EpochProofQuote): void {
+    this.logger.verbose(`Received epoch proof quote ${epochProofQuote.p2pMessageIdentifier()} from external peer.`);
+    this.epochProofQuotePool.addQuote(epochProofQuote);
+  }
+
   /**
    * Propagates provided message to peers.
    * @param message - The message to propagate.