Create reusable workflow to create issue to solve puzzle using `@sourcery-ai develop`

[brendanator]

• Create GitHub workflow called create-puzzle-issue.yml
• Trigger on:
  • workflow_call - inputs year, day, part as strings
• Add permissions needed: issues
• Set env vars
  • GH_TOKEN: secrets.USER_TOKEN
• Create an issue using gh issue create
  • Title: Advent of code - {year} day {day} part 1
  • Body:

    Write solution in `puzzles/year_{year}/day_{day}/solution.py`, and write tests in  `puzzles/year_{year}/day_{day}/test_solution.py` using relative imports
    

• Post a @sourcery-ai develop comment to the issue using gh issue comment

  @sourcery-ai develop - you can read the puzzle statement with `uv run advent_of_code.py read {year} {day} {part}`. Run the solution on `puzzles/year_{year}/day_{day}/input.txt` and write answer to `puzzles/year_{year}/day_{day}/answer_part{part}.txt`