Feature/basic classes for each service

power-pay-backend/src/main/java/com/adorsys/gis/powerpay/powerpaybackend/services/CheckBalance.java

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+package com.adorsys.gis.powerpay.powerpaybackend.services;
+
+// creating basic interface class for check balance
+public interface CheckBalance {
+
+}

power-pay-backend/src/main/java/com/adorsys/gis/powerpay/powerpaybackend/services/CheckBalanceImpl.java

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+package com.adorsys.gis.powerpay.powerpaybackend.services;
+
+public class CheckBalanceImpl implements CheckBalance  {
+
+}

power-pay-backend/src/main/java/com/adorsys/gis/powerpay/powerpaybackend/services/SendMoney.java

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+
+package com.adorsys.gis.powerpay.powerpaybackend.services;
+
+// creating basic interface class for send money
+public interface SendMoney {
+
+}

power-pay-backend/src/main/java/com/adorsys/gis/powerpay/powerpaybackend/services/SendMoneyImpl.java

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+package com.adorsys.gis.powerpay.powerpaybackend.services;
+
+public class SendMoneyImpl implements SendMoney{
+
+}