Usage quotas page table pagination

What does this MR do?

Issue: https://gitlab.com/gitlab-org/gitlab/-/issues/270069. Changes are behind additional_repo_storage_by_namespace feature flag.

The projects table in usage quotas page currently returns the first 99 items without the ability to fetch items beyond that. This MR adds pagination to the table and limits list to first 20 items.

Navigating to this page: Group > Settings > Usage Quotas > Storage tab

Demo

https://gitlab-review-usage-quot-ewwz7j.gitlab-review.app/groups/gitlab-qa-sandbox-group/-/usage_quotas

Screenshots (strongly suggested)

usage_quotas_page_pagination

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team