feat: day15 partly

* part2 has a bug that can be produced with examplecustom, fix plz

feat: day14

feat: day13

feat: day12

feat: day11

feat: day10

feat: day9

holy unperformant my brain is not braining

chore: clippy, because i can't just keep ignoring it

feat: day8

feat: day7

feat: day6

feat: day5

feat: day4

feat: day3

chore: clean main

feat: day2

feat: day1