add alipay and blockchain usdt

Helius

2021-12-17 5d20ce8581190dfbbd5fc0db37b4025cbc7ce390

 src/main/java/cc/mrbird/febs/pay/service/IPayService.java

@@ -13,4 +13,6 @@
    String aliPay(VipBuyDto vipBuyDto);

    void aliCallback(Map<String, String> params);

    String findUsdtAddress();
}