[Data Buckets] Distributed Databucket Caching (#3500)

* [Data Buckets] Zone-Based Data Bucket Caching

# Notes
- Adds a data bucket cache so we're not needlessly hitting the database every time we need to read a data bucket value.

* Cleanup and unify GetData access patterns

* Cache work

* Push

* Add to cache when we fetch and do a db hit

* Handle bucket misses in cache

* Formatting

* Logging

* [Data Buckets] Zone-Based Data Bucket Caching

- Adds a data bucket cache so we're not needlessly hitting the database every time we need to read a data bucket value.

* Cleanup and unify GetData access patterns

* Cache work

* Push

* Add to cache when we fetch and do a db hit

* Handle bucket misses in cache

* Formatting

* Remove redundant fetches from cache since GetData does the same thing

* Push progress

* Distributed cache work

* Logging

* Fix issue with scoping where same named keys could return overlapping results

* Misses cache tweak, logging, comments

* Add bot, client, and NPC bucket methods to Lua.

---------

Co-authored-by: Akkadius <akkadius1@gmail.com>

zone/zonedb.cpp

@@ -1927,6 +1927,8 @@ const NPCType *ZoneDatabase::LoadNPCTypesData(uint32 npc_type_id, bool bulk_load
 		);
 	}
 
+	std::vector<uint32> npc_ids;
+
 	for (NpcTypesRepository::NpcTypes &n : NpcTypesRepository::GetWhere((Database &) content_db, filter)) {
 		NPCType *t;
 		t = new NPCType;
@@ -2137,8 +2139,15 @@ const NPCType *ZoneDatabase::LoadNPCTypesData(uint32 npc_type_id, bool bulk_load
 
 		zone->npctable[t->npc_id] = t;
 		npc = t;
+
+		// If NPC ID is not in npc_ids, add to vector
+		if (!std::count(npc_ids.begin(), npc_ids.end(), t->npc_id)) {
+			npc_ids.emplace_back(t->npc_id);
+		}
 	}
 
+	DataBucket::BulkLoadEntities(DataBucketLoadType::NPC, npc_ids);
+
 	return npc;
 }