Add support for HackerEarth

[dashroshan]

What needs to be done

Create a hackerEarth function in the scraping.js file which returns an array of contest details from HackerEarth. You can use Axios to get the contest data as JSON from here. The contest data should be returned in the following format:

{
    name: 'name_of_contest',
    url: 'link_to_the_contest',
    start: start_time_in_epoch_format,
    duration: duration_in_seconds
}

[saimaheshtaduri]

I would like to contribute to this. assign to me. @roshan1337d

[dashroshan]

@saimaheshtaduri Assigned this to you. Submit after the 1st of October if you want it to count towards the HacktoberFest 🚀

[dashroshan]

PR submitted and approved