[listing-request] Add [OPPO ColorOSHack 2023]

[pnp-op]

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

    {
      "title": "OPPO ColorOSHack 2023",
      "url": "https://www.oppo.com/en/events/coloroshack-2023/",
      "startDate": "July 11",
      "endDate": "October 6",
      "year": "2023",
      "city": "Global",
      "host": "OPPO, in partnership with Plug and Play",
      "length": "36",
      "size": "200",
      "travel": "no",
      "prize": "yes",
      "highSchoolers": "unknown",
      "cost": "free",
      "facebookURL": "https://www.facebook.com/events/275185202135766/",
      "twitterURL": "",
      "notes": "Submit a proposal and stand a chance to win up to US$20,000!"
    }

[github-actions]

Thank you for contributing for Hackalist on this issue. We'll be right with you soon.

[pnp-op]

Hi team, would like to check if this will be listed soon?

[rodrigoargumedo]

Closing as stale.