Changelog - Xyntury-WoW

Server Realm Fixes: ```yaml • docs: add MapScaling configuration notes • Add map, zone and area scaling for USS group module ```
Server Realm Fixes: ```yaml • docs: add USS MapScaling options ```
Server Realm Fixes: ```yaml • Add USS combat and zone handlers ```
Server Realm Fixes: ```yaml • docs: document additional USS scaling modules • Add USS_CoreManager reload config test • worldserver: sync united scaling config ```
Server Realm Fixes: ```yaml • docs: add commenting guidelines and reference ```
Server Realm Fixes: ```yaml • Add spec-based scaling for players • Switch USS_CreatureScript to CreatureScript ```
Server Realm Fixes: ```yaml • Check empty LFG queue • Add safety checks before list front usage ```
Server Realm Fixes: ```yaml • Add DB2 structure verification script • Add changelog for DB2 header info script • Add checks for SpellEffect size • Add commenting guidelines and adjust GetSpellEffectEntry ```
Server Realm Fixes: ```yaml • Fix SpellEffect loading when SpellID missing ```
Server Realm Fixes: ```yaml • Use DB2FileLoader for map data • Use timed mutex in thread pools • map extractor: update build reference ```