Protobuf definitions for the Harmonic validator client.
auth.proto: Authentication service for obtaining access tokens for the block engine and relayerblock_engine.proto: Block engine interface for streaming packets and bundles, reporting leader slots, and endpoint discoverybundle.proto: Bundle typespacket.proto: Transaction packet and metadata typesrelayer.proto: Relayer TPU proxy interface — socket config and packet streamingshared.proto: Common types shared across protos