#### What type of PR is this?
/kind improvement
/milestone 2.0
#### What this PR does / why we need it:
以 inline svg 的形式加载 Logo，解决因为加载 svg 文件导致的页面抖动问题。
#### Special notes for your reviewer:
/cc @halo-dev/sig-halo-console
测试方式：检查登录页面、初始化页面、侧边菜单顶部的 Logo 是否加载正常。
#### Does this PR introduce a user-facing change?
```release-note
以 inline svg 的形式加载 Logo，解决因为加载 svg 文件导致的页面抖动问题。
```
#### What type of PR is this?
/kind feature
/milstone 2.0
#### What this PR does / why we need it:
在构建时，为静态资源添加随机字符串后缀。防止升级版本之后缓存不会及时更新。
#### Which issue(s) this PR fixes:
#### Special notes for your reviewer:
/cc @halo-dev/sig-halo-admin
#### Does this PR introduce a user-facing change?
```release-note
None
```
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#### What type of PR is this?
/kind feature
/milestone 2.0
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#### What this PR does / why we need it:
增加附件管理的功能，适配 https://github.com/halo-dev/halo/pull/2354
#### Which issue(s) this PR fixes:
Fixes https://github.com/halo-dev/halo/issues/2330
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#### Screenshots:
None
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#### Special notes for your reviewer:
todo list:
- [x] 根据分组筛选附件列表。
- [x] 非图片文件支持显示占位图。
- [x] 完善选择附件组件。
- [ ] ~~附件引用关系查询。~~
#### Does this PR introduce a user-facing change?
<!--
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```release-note
None
```
Ryan Wang
