dev add reason entity

referral/src/main/kotlin/ReferralService.kt

@@ -18,6 +18,7 @@ class ReferralService(
             override val totalIncome = 0
             override val availableIncome = 0
             override val holdBalance: Int = 0
+            override val spentBalance: Int = 0
             override val active: Boolean = false
         }
 
@@ -59,7 +60,8 @@ class ReferralService(
             totalIncome = referral.totalIncome,
             availableIncome = referral.availableIncome,
             holdBalance = referral.holdBalance,
-            referralLink = referral.referralLink
+            referralLink = referral.referralLink,
+            spentBalance = referral.spentBalance,
         )
     }