[listing-request] Add Carbon Hack 24

Please paste the following information into the following text to list your hackathon:

    {
      "title": "Carbon Hack 24",
      "url": "https://grnsft.org/hack",
      "startDate": "March 18",
      "endDate": "April 8",
      "year": "2024",
      "city": "Virtual",
      "host": "Green Software Foundation",
      "length": "21",
      "size": "400",
      "travel": "no",
      "prize": "yes",
      "highSchoolers": "yes",
      "cost": "free",
      "facebookURL": "",
      "twitterURL": "https://twitter.com/gsfcommunity",
      "notes": "At the heart of this hackathon is [Impact Framework](http://if.greensoftware.foundation/) (IF), an opensource measurement tool that calculates the environmental impacts of software by converting observable data from running systems, such as CPU utilization, page views, or number of installs, into environmental impacts like carbon, water, energy, and air quality in an auditable, replicable, verifiable, and transparent manner. Sponsored by Accenture, Amadeus, Aveva, BCG X, Sentry Software, Infocomm Media Development Authority, Nedbank South Africa, and NTT Data."
    }

Hackalist / Hackalist.github.io

[listing-request] Add Carbon Hack 24 #623