feat(user-center): points buy, balance withdraw, and asset record tabs

Add cash purchase of points (points_pay_s), wallet withdraw requests via
AKSRT_Withdrawal, Zibll-style dual-card layout with tabbed balance/points
ledgers, and admin switches for buy-points packages and balance withdraw.

inc/helpers/aksrt-domain-model.php

@@ -30,6 +30,8 @@ class AKSRT_Domain_Model {
     public const ORDER_PRODUCT_RESOURCE     = 'resource';
     public const ORDER_PRODUCT_VIP          = 'vip';
     public const ORDER_PRODUCT_RECHARGE     = 'recharge';
+    /** Cash purchase of points (zibll order_type=9). */
+    public const ORDER_PRODUCT_POINTS_BUY   = 'points_buy';
     public const ORDER_PRODUCT_SHOP         = 'shop_product';
     /** Paid plate follow (zibll order_type=11). product_id = plate post ID. */
     public const ORDER_PRODUCT_PLATE_FOLLOW = 'plate_follow';