Sort requirements .in files to make them easier to navigate

[SpecLad]

Motivation and context

How has this been tested?

Checklist

• I submit my changes into the develop branch
• [ ] I have added a description of my changes into the CHANGELOG file
• [ ] I have updated the documentation accordingly
• [ ] I have added tests to cover my changes
• [ ] I have linked related issues (see GitHub docs)
• [ ] I have increased versions of npm packages if it is necessary
  (cvat-canvas,
  cvat-core,
  cvat-data and
  cvat-ui)

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (develop@66fb026). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             develop    #6748   +/-   ##
==========================================
  Coverage           ?   82.43%           
==========================================
  Files              ?      369           
  Lines              ?    39790           
  Branches           ?     3547           
==========================================
  Hits               ?    32799           
  Misses             ?     6991           
  Partials           ?        0           

Components	Coverage Δ
cvat-ui	77.37% <ø> (?)
cvat-server	86.87% <ø> (?)