Add article of 2024-12-18

Author: actions-user

docs/2024/puzzles/day18.md

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+import Solver from "../../../../../website/src/components/Solver.js"
+
+# Day 18: RAM Run
+
+## Puzzle description
+
+https://adventofcode.com/2024/day/18
+
+## Solutions from the community
+
+Share your solution to the Scala community by editing this page.
+You can even write the whole article! [See here for the expected format](https://github.com/scalacenter/scala-advent-of-code/discussions/424)