feat(Core/Maps): port spawn system/dynamic spawns from TrinityCore (#25206)

Co-authored-by: r00ty-tc <r00ty-tc@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

src/server/database/Database/Implementation/WorldDatabase.cpp

@@ -111,6 +111,7 @@ void WorldDatabaseConnection::DoPrepareStatements()
     // 0: uint8
     PrepareStatement(WORLD_SEL_REQ_XP, "SELECT Experience FROM player_xp_for_level WHERE Level = ?", CONNECTION_SYNCH);
     PrepareStatement(WORLD_UPD_VERSION, "UPDATE version SET core_version = ?, core_revision = ?", CONNECTION_ASYNC);
+    PrepareStatement(WORLD_DEL_SPAWNGROUP_MEMBER, "DELETE FROM spawn_group WHERE spawnType = ? AND spawnId = ?", CONNECTION_ASYNC);
 }
 
 WorldDatabaseConnection::WorldDatabaseConnection(MySQLConnectionInfo& connInfo) : MySQLConnection(connInfo)

src/server/database/Database/Implementation/WorldDatabase.h

@@ -116,6 +116,7 @@ enum WorldDatabaseStatements : uint32
     WORLD_SEL_REQ_XP,
     WORLD_INS_GAMEOBJECT_ADDON,
     WORLD_UPD_VERSION,
+    WORLD_DEL_SPAWNGROUP_MEMBER,
 
     MAX_WORLDDATABASE_STATEMENTS
 };