Squashed changed from modularized-validator-store

Cargo.lock

@@ -5472,8 +5472,14 @@ name = "lighthouse_validator_store"
 version = "0.1.0"
 dependencies = [
  "account_utils",
+ "beacon_node_fallback",
  "doppelganger_service",
+ "either",
+ "environment",
+ "eth2",
+ "futures",
  "initialized_validators",
+ "logging",
  "parking_lot 0.12.3",
  "serde",
  "signing_method",
@@ -5481,6 +5487,7 @@ dependencies = [
  "slog",
  "slot_clock",
  "task_executor",
+ "tokio",
  "types",
  "validator_metrics",
  "validator_store",
@@ -9905,7 +9912,6 @@ dependencies = [
  "types",
  "validator_metrics",
  "validator_services",
- "validator_store",
  "warp",
  "warp_utils",
 ]