[Guide] Issue Card 양식입니다.

New Issue 버튼 클릭 후, Issue Card를 선택하면 아래 양식에 따라 작성할 수 있습니다.

## Fill the title according to the below form
[Client/Server/Database] / [#이슈번호] / edit: [수정한 파일명]

## ISSUE
* Group: client, server, database
* Type: add, fix, delete
* Detail: fix actions from group

## TODO
- [x] Job1
- [x] Job2
- [x] Job3

## Estimated time
> Pick one of the below
> 0.5h / 1h / 1.5h / 2h / 2.5h / 3h

## Labels
Estimated time: E: 1h
Group : client, server
Sprint: Sprint__NUMBER__
Urgency: High, Middle, Low