Add day 3 solution (#880)

Author: bishabosha

docs/2025/puzzles/day03.md

@@ -123,6 +123,7 @@ def part2(input: String): Long = process(12)(input)
 - [Solution](https://github.com/rmarbeck/advent2025/blob/main/day03/src/main/scala/Solution.scala) by [Raphaël Marbeck](https://github.com/rmarbeck)
 - [Solution](https://github.com/johnduffell/aoc-2025/blob/main/src/main/scala/Day3.scala) by [John Duffell](https://github.com/johnduffell)
 - [Solution](https://github.com/merlinorg/advent-of-code/blob/main/src/main/scala/year2025/day03.scala) by [merlinorg](https://github.com/merlinorg)
+- [Solution](https://github.com/bishabosha/advent-of-code-2025/blob/main/scala/2025_day03.scala) by [Jamie Thompson](https://github.com/bishabosha)
 - [Solution](https://github.com/Philippus/adventofcode/blob/main/src/main/scala/adventofcode2025/Day03.scala) by [Philippus Baalman](https://github.com/philippus)
 - [Solution](https://github.com/YannMoisan/advent-of-code/blob/master/2025/src/main/scala/Day3.scala) by [Yann Moisan](https://github.com/YannMoisan)
 - [Solution](https://github.com/aamiguet/advent-2025/blob/main/src/main/scala/ch/aamiguet/advent2025/Day03.scala) by [Antoine Amiguet](https://github.com/aamiguet)