add contract money info interface

wzy

2020-06-03 c356816bb9969fc5cde71b670461d9ddf7534e8f

 src/main/java/com/xcong/excoin/common/system/service/CommonService.java

@@ -8,4 +8,5 @@

    public boolean verifyCode(String account, String code);

    public String generateOrderNo(Long mid);
}