Remove consensus/types re-exports (#8540)

There are certain crates which we re-export within `types` which creates a fragmented DevEx, where there are various ways to import the same crates.

```rust
// consensus/types/src/lib.rs
pub use bls::{
AggregatePublicKey, AggregateSignature, Error as BlsError, Keypair, PUBLIC_KEY_BYTES_LEN,
PublicKey, PublicKeyBytes, SIGNATURE_BYTES_LEN, SecretKey, Signature, SignatureBytes,
get_withdrawal_credentials,
};
pub use context_deserialize::{ContextDeserialize, context_deserialize};
pub use fixed_bytes::FixedBytesExtended;
pub use milhouse::{self, List, Vector};
pub use ssz_types::{BitList, BitVector, FixedVector, VariableList, typenum, typenum::Unsigned};
pub use superstruct::superstruct;
```

This PR removes these re-exports and makes it explicit that these types are imported from a non-`consensus/types` crate.


Co-Authored-By: Mac L <mjladson@pm.me>

validator_client/validator_services/src/duties_service.rs

@@ -10,6 +10,7 @@ use crate::block_service::BlockServiceNotification;
 use crate::sync::SyncDutiesMap;
 use crate::sync::poll_sync_committee_duties;
 use beacon_node_fallback::{ApiTopic, BeaconNodeFallback};
+use bls::PublicKeyBytes;
 use eth2::types::{
     AttesterData, BeaconCommitteeSelection, BeaconCommitteeSubscription, DutiesResponse,
     ProposerData, StateId, ValidatorId,
@@ -29,7 +30,7 @@ use std::time::Duration;
 use task_executor::TaskExecutor;
 use tokio::{sync::mpsc::Sender, time::sleep};
 use tracing::{debug, error, info, warn};
-use types::{ChainSpec, Epoch, EthSpec, Hash256, PublicKeyBytes, SelectionProof, Slot};
+use types::{ChainSpec, Epoch, EthSpec, Hash256, SelectionProof, Slot};
 use validator_metrics::{ATTESTATION_DUTY, get_int_gauge, set_int_gauge};
 use validator_store::{DoppelgangerStatus, Error as ValidatorStoreError, ValidatorStore};