feat: add `solvedac-box` to the list

[abiriadev]

Summary

Add abiriadev/solvedac-box to the list

Description

Solved.ac is a rating site for BOJ(Baekjoon Online Judge. Lot similar to Codeforce and LeetCode, but for Korean developers.). solvedac-box is an action to update pinned Gist automatically to contain solved.ac profile information.

Links

GitHub Repo: abiriadev/solvedac-box Sample Gist: 💯 My Solved.ac Profile

Screenshot of example gist

Checklist

• [x] List item follows expected format (e.g. [example-box](link) - Update a pinned gist to contain...)
• [x] Pull request title is useful and clear
• [x] Pull request template is filled out
• [x] Pull request contains a single addition only