Function massa_grpc::stream::send_endorsements::send_endorsements

pub(crate) async fn send_endorsements(
    grpc: &MassaPublicGrpc,
    request: Request<Streaming<SendEndorsementsRequest>>
) -> Result<SendEndorsementsStreamType, GrpcError>

This function takes a streaming request of endorsements messages, verifies, saves and propagates the endorsements received in each message, and sends back a stream of endorsements ids messages