perf(refactor): improve code structure

[linrongbin16]

No description provided.

[codecov]

Codecov Report

Attention: 61 lines in your changes are missing coverage. Please review.

Comparison is base (1fd1869) 16.85% compared to head (378d1d1) 32.17%.

❗ Current head 378d1d1 differs from pull request most recent head 6681002. Consider uploading reports for the commit 6681002 to get more accurate results

Files	Patch %	Lines
lua/colorbox.lua	3.22%	60 Missing ⚠️
lua/colorbox/utils.lua	97.29%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #33       +/-   ##
===========================================
+ Coverage   16.85%   32.17%   +15.31%     
===========================================
  Files           3        4        +1     
  Lines         261      230       -31     
===========================================
+ Hits           44       74       +30     
+ Misses        217      156       -61     

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