2025 days 5-8

[dy-tea]

Also includes example inputs.

Day 6 input has some extra whitespace at the end, this is intentional and is the same as the example input.

Day 8 part 1 has a 20-line example where 10 "connections" should be formed while it is 1000 lines and 1000 "connections" in the full input. I just put a simple check in my code that sets it to 10 if the line count is low.

[dy-tea]

Note that @JalonSolov said in #84 to remember to delete the .gitkeep files. They were actually deleted in that pr but for reason Github shows their deletions as whitespace-only changes which is a bit misleading.