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>

testing/simulator/Cargo.toml

@@ -20,4 +20,5 @@ serde_json = { workspace = true }
 tokio = { workspace = true }
 tracing = { workspace = true }
 tracing-subscriber = { workspace = true }
+typenum = { workspace = true }
 types = { workspace = true }

testing/simulator/src/checks.rs

@@ -1,7 +1,8 @@
 use crate::local_network::LocalNetwork;
 use node_test_rig::eth2::types::{BlockId, FinalityCheckpointsData, StateId};
 use std::time::Duration;
-use types::{Epoch, EthSpec, ExecPayload, ExecutionBlockHash, Slot, Unsigned};
+use typenum::Unsigned;
+use types::{Epoch, EthSpec, ExecPayload, ExecutionBlockHash, Slot};
 
 /// Checks that all of the validators have on-boarded by the start of the second eth1 voting
 /// period.