feature: add bank account exceptions

src/main/java/com/eventsourcing/bankAccount/exceptions/InvalidAddressException.java

@@ -0,0 +1,11 @@
+package com.eventsourcing.bankAccount.exceptions;
+
+public class InvalidAddressException extends RuntimeException {
+    public InvalidAddressException() {
+        super();
+    }
+
+    public InvalidAddressException(String address) {
+        super("invalid address: " + address);
+    }
+}