feat: 支持条目封面裁剪

[chivehao]

• Update the CHANGES log.
• If this pull request closes/resolves/fixes an existing issue, replace the issue number. Closes #.

[codecov]

Codecov Report

Attention: Patch coverage is 50.98039% with 25 lines in your changes missing coverage. Please review.

Project coverage is 45.21%. Comparing base (465f404) to head (68602d6).

Files	Patch %	Lines
...listener/AttachmentSubjectCoverChangeListener.java	37.14%	19 Missing and 3 partials ⚠️
...attachment/service/impl/AttachmentServiceImpl.java	0.00%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #630      +/-   ##
============================================
- Coverage     45.31%   45.21%   -0.10%     
- Complexity      785      786       +1     
============================================
  Files           191      192       +1     
  Lines          7305     7342      +37     
  Branches        384      385       +1     
============================================
+ Hits           3310     3320      +10     
- Misses         3884     3909      +25     
- Partials        111      113       +2     

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