Core/Items: Implemented AzeriteItem

Port From (https://github.com/TrinityCore/TrinityCore/commit/ab6ae44b638136665e2ae6c6a434ad7426621c39)

sql/updates/characters/master/2019_11_12_00_characters.sql

@@ -0,0 +1,11 @@
+--
+-- Table structure for table `item_instance_azerite`
+--
+DROP TABLE IF EXISTS `item_instance_azerite`;
+CREATE TABLE `item_instance_azerite` (
+  `itemGuid` bigint(20) unsigned NOT NULL,
+  `xp` bigint(20) unsigned NOT NULL DEFAULT '0',
+  `level` int(10) unsigned NOT NULL DEFAULT '1',
+  `knowledgeLevel` int(10) unsigned NOT NULL DEFAULT '0',
+  PRIMARY KEY (`itemGuid`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;