add support for --non-human-readable flag

[ayushpoddar]

Description

This PR adds support for the flag --non-human-readable. Using this flag will display the file sizes in bytes, not converted to a human friendly format.

Tasks performed in this PR:

• Add support for showing file sizes in bytes in long format. Use the --nh or --non-human-readable flag.
• Update the README accordingly (with screenshot)
• Update the "MINOR" component of the version as per the Semantic Versioning specification. Why?
  • This PR adds a new feature in a backwards-compatible manner.

Other information

• Relevant Issues : Option for NOT human readable size - show file size in bytes #572
• Relevant PRs : (none)
• Type of change :
  • New feature
  • Bug fix for existing feature
  • Code quality improvement
  • Addition or Improvement of tests
  • Addition or Improvement of documentation

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.25 🎉

Comparison is base (3ad436b) 91.79% compared to head (5f3b880) 92.04%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #589      +/-   ##
==========================================
+ Coverage   91.79%   92.04%   +0.25%     
==========================================
  Files           8        8              
  Lines         597      616      +19     
==========================================
+ Hits          548      567      +19     
  Misses         49       49              

Impacted Files	Coverage Δ
lib/colorls/core.rb	93.11% <100.00%> (+0.45%)	⬆️
lib/colorls/flags.rb	89.59% <100.00%> (+0.12%)	⬆️

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[ayushpoddar]

@avdv What can we do about the failing test?

[avdv]

Nice work, thank you @ayushpoddar !

[avdv]

@avdv What can we do about the failing test?

I think we just need to increase the number of allowed lines, change /(.*\n){3}/ to /(.*\n){4}/ for that test.

[avdv]

And could you add an OK colorls --long --non-human-readable check to test/checks please?

[avdv]

LGTM, thank you!