feat: add download feature for attachment

[ruibaby]

What type of PR is this?

/kind feature
/area ui
/milestone 2.14.0

What this PR does / why we need it:

附件支持下载。

Which issue(s) this PR fixes:

Fixes #5476

Special notes for your reviewer:

测试方式：

1. 上传若干附件。
2. 测试下载功能是否符合预期。

Does this PR introduce a user-facing change?

为附件添加下载功能

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.81%. Comparing base (5fdf6c0) to head (bf31c7e).
Report is 48 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #5496      +/-   ##
============================================
- Coverage     56.91%   56.81%   -0.10%     
- Complexity     3319     3321       +2     
============================================
  Files           587      589       +2     
  Lines         18968    19082     +114     
  Branches       1401     1365      -36     
============================================
+ Hits          10795    10841      +46     
- Misses         7594     7668      +74     
+ Partials        579      573       -6     

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[guqing]

works very well

[LIlGG]

/lgtm

[f2c-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: guqing, LIlGG

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• ui/OWNERS [guqing]

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