feat: add emoji option

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing open issue: fixes 🚀 Feature: Add an option for repository emoji #1942
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Adds a separate options.emoji that defaults to the last detected emoji in options.description, or "💖" if not found.

🎁

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.11%. Comparing base (fd1647b) to head (8017e12).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1984   +/-   ##
=======================================
  Coverage   99.11%   99.11%           
=======================================
  Files          92       93    +1     
  Lines        4050     4070   +20     
  Branches      231      232    +1     
=======================================
+ Hits         4014     4034   +20     
  Misses         36       36           

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[github-actions]

🎉 This is included in version v2.6.0 🎉

The release is available on:

• GitHub releases
• npm package (@latest dist-tag)

Cheers! 📦🚀