Add Philippus' solution for day 01 (#850)

Co-authored-by: Seth Tisue <seth@tisue.net>

Author: Philippus

docs/2025/puzzles/day01.md

@@ -9,6 +9,9 @@ https://adventofcode.com/2025/day/1
 ## Solutions from the community
 
 - [Solution](https://github.com/merlinorg/advent-of-code/blob/main/src/main/scala/year2025/day01.scala) by [merlinorg](https://github.com/merlinorg)
+
+- [Solution](https://github.com/Philippus/adventofcode/blob/main/src/main/scala/adventofcode2025/Day01.scala) by [Philippus Baalman](https://github.com/philippus)
+
 - [Solution](https://github.com/rmarbeck/advent2025/blob/main/day1/src/main/scala/Solution.scala) by [Raphaël Marbeck](https://github.com/rmarbeck)
 
 Share your solution to the Scala community by editing this page.