Use Billing Plan Card layout in profile/billing and group/billing

What does this MR do?

Adds Billing Plans to the top-level groups/billing route. Changes Billing Plan table to Card layout as per https://gitlab.com/gitlab-org/gitlab-ce/issues/63599

Profile + Free Plan

Profile + Silver Plan

Profile + Gold Plan

Group + Free Plan

Group + Silver Plan

Group + Gold Plan

Closes #31471 (closed)

Closes #13485 (closed)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation created/updated or follow-up review issue created
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Performance 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

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