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/http_api/src/lib.rs

@@ -22,6 +22,7 @@ use account_utils::{
 };
 pub use api_secret::ApiSecret;
 use beacon_node_fallback::CandidateInfo;
+use bls::{PublicKey, PublicKeyBytes};
 use core::convert::Infallible;
 use create_validator::{
     create_validators_mnemonic, create_validators_web3signer, get_voting_password_storage,
@@ -30,8 +31,8 @@ use directory::{DEFAULT_HARDCODED_NETWORK, DEFAULT_ROOT_DIR, DEFAULT_VALIDATOR_D
 use eth2::lighthouse_vc::{
     std_types::{AuthResponse, GetFeeRecipientResponse, GetGasLimitResponse},
     types::{
-        self as api_types, GenericResponse, GetGraffitiResponse, Graffiti, PublicKey,
-        PublicKeyBytes, SetGraffitiRequest, UpdateCandidatesRequest, UpdateCandidatesResponse,
+        self as api_types, GenericResponse, GetGraffitiResponse, Graffiti, SetGraffitiRequest,
+        UpdateCandidatesRequest, UpdateCandidatesResponse,
     },
 };
 use health_metrics::observe::Observe;