Refactor consensus/types (#7827)

Organize and categorize `consensus/types` into modules based on their relation to key consensus structures/concepts.
This is a precursor to a sensible public interface.

While this refactor is very opinionated, I am open to suggestions on module names, or type groupings if my current ones are inappropriate.


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

beacon_node/http_api/src/block_id.rs

@@ -2,6 +2,7 @@ use crate::version::inconsistent_fork_rejection;
 use crate::{ExecutionOptimistic, state_id::checkpoint_slot_and_execution_optimistic};
 use beacon_chain::kzg_utils::reconstruct_blobs;
 use beacon_chain::{BeaconChain, BeaconChainError, BeaconChainTypes, WhenSlotSkipped};
+use eth2::beacon_response::{ExecutionOptimisticFinalizedMetadata, UnversionedResponse};
 use eth2::types::BlockId as CoreBlockId;
 use eth2::types::DataColumnIndicesQuery;
 use eth2::types::{BlobIndicesQuery, BlobWrapper, BlobsVersionedHashesQuery};
@@ -10,8 +11,7 @@ use std::str::FromStr;
 use std::sync::Arc;
 use types::{
     BlobSidecarList, DataColumnSidecarList, EthSpec, FixedBytesExtended, ForkName, Hash256,
-    SignedBeaconBlock, SignedBlindedBeaconBlock, Slot, UnversionedResponse,
-    beacon_response::ExecutionOptimisticFinalizedMetadata,
+    SignedBeaconBlock, SignedBlindedBeaconBlock, Slot,
 };
 use warp::Rejection;