fix: sort projects by stars in add too

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing open issue: fixes 🐛 Bug: projects:add doesn't add in sorted order #89
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Splits out a general byStars.

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (8ccba13) 15.51% compared to head (b840345) 16.26%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
src/generate/generateProjects.ts	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #90      +/-   ##
==========================================
+ Coverage   15.51%   16.26%   +0.74%     
==========================================
  Files          13       14       +1     
  Lines         651      658       +7     
  Branches        9        9              
==========================================
+ Hits          101      107       +6     
- Misses        550      551       +1     

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