feat: Add volume snapshot content management page
Created by: weili520
What type of PR is this?
/kind feature
What this PR does / why we need it:
Which issue(s) this PR fixes:
- Part of work about ##2930 (closed)
- Add Add volume snapshot content management page.
Special notes for reviewers:
- snapshot content list page
- snapshot content detail page
Does this PR introduced a user-facing change?
Add volume snapshot content management page