feat(p2p): request response skeleton

[Maddiaa0]

Overview

Part of #7964

This is a minimal implementation of the guts of a request and response protocol that dials the connected peers and asks for a given data.

The current design relies on the protocol mapping, which maps a protocol to a handler, the idea being that this service will be wrapped by the larger p2p client which will have direct access to the relevant tx / attestation pools.

Issues spawned from this work

• https://github.com/AztecProtocol/aztec-packages/issues/8077