[darts] Add scoreboard image

[habere-et-dispertire]

Pull from upstream problem-specification repo.

[github-actions]

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[habere-et-dispertire]

Error appears to be :

Can't use 'tar -xzf' extract archive
file: /home/runner/work/_actions/_temp_9f81e134-3fe5-42f4-a911-61c5f1c66b9c/bdcd6d65-4942-4bdb-a500-49a6256953f7.tar.gz.
return code: 2.