Migrate Advent of Code Features

[janine9vn]

This is going to remove Advent of Code features from Sir Lancebot and add them here. This will have to wait until #4 is complete.

Important Notes

• Advent of Code was hero-sprinted originally, so there are a few ... bugs in it. If someone would like to do a straight feature port and only do the disnake conversions, that's fine. However, someone kaizening these features would also be fine with me. The lionshare of updates and improvements thought should be saved for a later PR date.
• This feature port will be rougher than others due to the season-locks it's assuming we'll have. I do not want season locks in Sir Robin. So we need to think of another solution.

[D0rs4n]

I'd be interested in the migration, have worked with the AoC features on AoC previously.
(At least I'll try to get it done 👍 )

[janine9vn]

#66 Partially handles this, but it also ports the seasonal-locks as is, which I dislike.
I'll keep this issue open for now until I can create proper issues for the other changes I'd like.