* [NOD-1566] Add a dependency to golang-lru.
* [NOD-1566] Add caching to blockstore.go.
* [NOD-1566] Add LRUCache to all store objects and initialize them.
* [NOD-1566] Add caching to acceptanceDataStore.
* [NOD-1566] Add caching to blockHeaderStore.
* [NOD-1566] Implement a simpler LRU cache.
* [NOD-1566] Use the simpler cache implementation everywhere.
* [NOD-1566] Remove dependency in golang-lru.
* [NOD-1566] Fix object reuse issues in store Get functions.
* [NOD-1566] Add caching to blockRelationStore.
* [NOD-1566] Add caching to blockStatusStore.
* [NOD-1566] Add caching to ghostdagDataStore.
* [NOD-1566] Add caching to multisetStore.
* [NOD-1566] Add caching to reachabilityDataStore.
* [NOD-1566] Add caching to utxoDiffStore.
* [NOD-1566] Add caching to reachabilityReindexRoot.
* [NOD-1566] Add caching to pruningStore.
* [NOD-1566] Add caching to headerTipsStore.
* [NOD-1566] Add caching to consensusStateStore.
* [NOD-1566] Add comments explaining why we don't discard staging at the normal location in consensusStateStore.
* [NOD-1566] Make go vet happy.
* [NOD-1566] Fix merge errors.
* [NOD-1566] Add a missing break statement.
* [NOD-1566] Run go mod tidy.
* [NOD-1566] Remove serializedUTXOSetCache.
