Advent of Code Command-Line Helper

The `advent-of-code` Python library provides a command-line tool (`aoc`) and a programmatic API for Advent of Code. It helps automate fetching inputs, scaffolding solutions, and submitting answers. While the PyPI package (version 2025.6.0) receives active updates, its officially linked GitHub repository (`https://github.com/fornwall/advent-of-code`) has been archived since November 2023. This creates a discrepancy where new PyPI versions are released without publicly updated source code. The library uses a year-ahead versioning scheme (e.g., 2025.x.x versions released in 2024).