Add Philippus' solution for day 10 (#773)

docs/2024/puzzles/day10.md

@@ -158,6 +158,7 @@ throw away duplicate counts.
 - [Solution](https://github.com/jportway/advent2024/blob/master/src/main/scala/Day10.scala) by [Joshua Portway](https://github.com/jportway)
 - [Solution](https://github.com/scarf005/aoc-scala/blob/main/2024/day10.scala) by [scarf](https://github.com/scarf005)
 - [Solution](https://github.com/TheDrawingCoder-Gamer/adventofcode2024/blob/master/src/main/scala/day10.sc) by [Bulby](https://github.com/TheDrawingCoder-Gamer)
+- [Solution](https://github.com/Philippus/adventofcode/blob/main/src/main/scala/adventofcode2024/Day10.scala) by [Philippus Baalman](https://github.com/philippus)
 
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