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/signing_method/Cargo.toml

@@ -5,6 +5,7 @@ edition = { workspace = true }
 authors = ["Sigma Prime <contact@sigmaprime.io>"]
 
 [dependencies]
+bls = { workspace = true }
 eth2_keystore = { workspace = true }
 ethereum_serde_utils = { workspace = true }
 lockfile = { workspace = true }

validator_client/signing_method/src/lib.rs

@@ -3,6 +3,7 @@
 //! - Via a local `Keypair`.
 //! - Via a remote signer (Web3Signer)
 
+use bls::{Keypair, PublicKey, Signature};
 use eth2_keystore::Keystore;
 use lockfile::Lockfile;
 use parking_lot::Mutex;

validator_client/signing_method/src/web3signer.rs

@@ -1,6 +1,7 @@
 //! Contains the types required to make JSON requests to Web3Signer servers.
 
 use super::Error;
+use bls::{PublicKeyBytes, Signature};
 use serde::{Deserialize, Serialize};
 use types::*;