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/slashing_protection/src/slashing_database.rs

@@ -1,6 +1,7 @@
 use crate::signed_attestation::InvalidAttestation;
 use crate::signed_block::InvalidBlock;
 use crate::{NotSafe, Safe, SignedAttestation, SignedBlock, SigningRoot, signing_root_from_row};
+use bls::PublicKeyBytes;
 use eip_3076::{
     Interchange, InterchangeData, InterchangeMetadata, SignedAttestation as InterchangeAttestation,
     SignedBlock as InterchangeBlock,
@@ -12,7 +13,7 @@ use std::fs::File;
 use std::path::Path;
 use std::time::Duration;
 use tracing::instrument;
-use types::{AttestationData, BeaconBlockHeader, Epoch, Hash256, PublicKeyBytes, SignedRoot, Slot};
+use types::{AttestationData, BeaconBlockHeader, Epoch, Hash256, SignedRoot, Slot};
 
 type Pool = r2d2::Pool<SqliteConnectionManager>;