feat: 支持条目封面裁剪

[chivehao]

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

[codecov[bot]]

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 :warning:
...attachment/service/impl/AttachmentServiceImpl.java	0.00%	3 Missing :warning:

Additional details and impacted files

```diff @@ 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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