fix: chmod ug+x .husky/pre-commit after writing structure

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing open issue: fixes 🐛 Bug: Error in git commit on created repo: "The '.husky/pre-commit' hook was ignored because it's not set as executable." #718
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Applies the suggested fix from typicode/husky#1177 of manually changing the file's mode with chmod.

[codecov]

Codecov Report

Merging #719 (00489b2) into main (b9f7dbb) will increase coverage by 0.01%.
Report is 1 commits behind head on main.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #719      +/-   ##
==========================================
+ Coverage   91.03%   91.04%   +0.01%     
==========================================
  Files          80       80              
  Lines        3948     3953       +5     
  Branches      216      216              
==========================================
+ Hits         3594     3599       +5     
  Misses        353      353              
  Partials        1        1              

Flag	Coverage Δ
create	72.73% <100.00%> (+0.03%)	⬆️
initialize	33.74% <40.00%> (+<0.01%)	⬆️
migrate	73.36% <100.00%> (+0.03%)	⬆️
unit	34.10% <0.00%> (-0.05%)	⬇️

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Files Changed	Coverage Δ
src/steps/writing/writeStructure.ts	100.00% <100.00%> (ø)

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[github-actions]

🎉 This is included in version v1.29.10 🎉

The release is available on:

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

Cheers! 📦🚀