Create Leaderboard API

[joshuachai]

Create GET request to retrieve Leaderboard data.

We can use dummy data like:

leaderboard = {
    "honor_point":1,
    "regular_point":10,
    "completed_time_second":100
    # other details needed for FrontEnd
}

We need a folder under api > leaderboard, this command might be useful

python manage.py startapp leaderboard   

The GET request URL can be added in urls.py
The dummy data can be added in views.py
Once the data retrieved, we can attach the BE response to FE component.

[github-actions]

Branch issue-24-Create_Leaderboard_API created!

[j-brkr]

Completed in PR #40