Add Contest Page

[wdsrocha]

Only with the contest header and the problem list, for now.

Manual testing: https://dojo-pffemfdgj-wdsrocha.vercel.app/contest/1

[vercel]

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🔍 Inspect: https://vercel.com/wdsrocha/dojo/2ZpBm4AYS87HgjpXgBBdNpQdsGhT
✅ Preview: Failed

[Deployment for 8365cf7 failed]

[wdsrocha]

For some reason, the CI build keeps failing with the following error:

07:34:31.673 | Failed to compile.
07:34:31.673 | ./components/ContestHeader.tsx:20:25
07:34:31.673 | Type error: Property 'format' does not exist on type 'Duration'.
07:34:31.673 |   18 |   if (days > 1) return `${days} dias`;
07:34:31.673 |   19 |   if (days === 1) return `${Math.floor(timeDifference.asHours())} horas`;
07:34:31.673 | > 20 |   return timeDifference.format("HH:mm:ss");
07:34:31.674 |      |                        ^
07:34:31.674 |   21 | };
07:34:31.674 |   22 |
07:34:31.674 |   23 | type ContestHeaderProps = Pick<Contest, "startDate" | "endDate" | "title">;
07:34:31.752 | error Command failed with exit code 1.
07:34:31.752 | info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
07:34:31.771 | Error: Command "yarn build" exited with 1

On package.json, dayjs is ^1.8.30 and the Duration plugin came out on 1.8.24, I wonder if the correct version is being installed. Maybe the .extend is being called in the wrong place, so the plugin gets tree shaken before? Who knows.

Managed to deploy this anyway with vercel CLI (vercel deploy --prod), so I'll merge for now.

[wdsrocha]

Maybe Duration only works browser side? To check: https://nextjs.org/docs/advanced-features/dynamic-import#with-no-ssr