feat: 完成第三方利息汇率对接

Yi.Abp.Net8/module/bbs/Yi.Framework.Bbs.Domain/Managers/BankValue/IBankValueProvider.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Yi.Framework.Bbs.Domain.Managers.BankValue
+{
+    public interface IBankValueProvider
+    {
+        public Task<decimal> GetValueAsync();
+    }
+}