[Enhance] Support skill_nami_sui

- For Arcaea 6.6.0
- New partners "Tairitsu & El Fail" and "Nami & Sui (Twilight)"
- Add support for the character skill `skill_nami_sui`.

latest version/database/init/packs.json

@@ -970,5 +970,23 @@
 		],
 		"orig_price": 500,
 		"price": 500
+	},
+	{
+		"name": "djmax_append_1",
+		"items": [
+			{
+				"type": "pack",
+				"id": "djmax_append_1",
+				"is_available": true
+			},
+			{
+				"type": "core",
+				"amount": 5,
+				"id": "core_generic",
+				"is_available": true
+			}
+		],
+		"orig_price": 500,
+		"price": 500
 	}
 ]