feat: Add .nojekyll file by default for all branches

[peaceiris]

Pull Request for #437

[codecov]

Codecov Report

Merging #438 into main will decrease coverage by 0.34%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #438      +/-   ##
==========================================
- Coverage   52.32%   51.98%   -0.35%     
==========================================
  Files           4        4              
  Lines         279      277       -2     
  Branches       50       49       -1     
==========================================
- Hits          146      144       -2     
  Misses        132      132              
  Partials        1        1              

Impacted Files	Coverage Δ
src/utils.ts	100.00% <100.00%> (ø)

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