make classnames short

[akellbl4]

I've got the idea here and reimplemented it in our project in favor of reducing JS and CSS bundle size as well.

UPD. When we fully migrate on CSS Modules size of JS and CSS should drop due to using this shorting mechanism.

[codecov]

Codecov Report

Merging #980 (e193633) into master (82f8f6c) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #980   +/-   ##
=======================================
  Coverage   43.17%   43.17%           
=======================================
  Files         127      127           
  Lines        2622     2622           
  Branches      519      519           
=======================================
  Hits         1132     1132           
  Misses       1444     1444           
  Partials       46       46           

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[github-actions]

size-limit report 📦

Path	Size
public/embed.mjs	2.25 KB (-1.25% 🔽)
public/remark.mjs	67.05 KB (-0.48% 🔽)
public/remark.css	10.07 KB (-5.18% 🔽)
public/last-comments.mjs	31.06 KB (-0.12% 🔽)
public/last-comments.css	5.72 KB (-0.82% 🔽)
public/deleteme.mjs	10.09 KB (-0.24% 🔽)
public/counter.mjs	601 B (-4% 🔽)