UI Kit > Add GitLab tier badge variant

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### Description

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a checklist of variations, states, and breakpoints to the description so that reviewers can be sure to cross reference everything that has been completed. -->

Following https://gitlab.com/gitlab-org/gitlab-services/design.gitlab.com/-/issues/1242 and https://gitlab.com/gitlab-org/gitlab-services/design.gitlab.com/-/merge_requests/2728#note_862246994 we should add a GitLab tier badge variant to GitLab UI. 

### Figma file

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[View working file in Figma →](https://www.figma.com/file/qEddyqCrI7kPSBjGmwkZzQ/branch/H45tzHETZOwB7kJh3YqKj0/Component-library?node-id=19947%3A350E)

### Checklist

Make sure the following are completed before closing the issue:

1. [x] **Assignee**: Design in your working file. When applicable, follow our 
   [structure][structure], [building][building], and [annotation][annotation] guidelines. If you have any questions, reach out to a [Foundations designer][foundations-team].
1. [x] **Assignee**: Update the link to the working file in the issue 
   description.
1. [x] **Assignee**: Ask a [Foundations designer][foundations-team]
   to review your design (ensure they have edit permissions in Figma).
1. [x] **Reviewer**: Review and approve assignee’s design. Specific design 
   questions can be addressed with comments in Figma. Comment in this issue when the content is less specific to the design or requires greater visibility.
1. [x] **Reviewer**: Assign to a [Figma maintainer][figma-maintainer]
   for final review (make sure they have edit permissions in Figma).
1. [x] **Maintainer**: Review and approve assignee’s changes.
1. [x] **Maintainer**: Merge the branch or add the changes or additions to the
   target file.
     1. [ ] Ensure that all styles and components now belong to the target file.
     1. [ ] For changes to the **Component Library** file, view the components in the Assets panel to ensure they align with our [asset library structure guidelines][structure].
1. [ ] **Maintainer**: When applicable, [publish][publishing] any library 
   changes along with a clear commit message.
1. [ ] **Assignee**: If work was not done in a branch (a merged branch will automatically be archived), move your working file 
   to the shared Figma project:
     1. [ ] For Component Library changes, move your file to the [**Component archive**][component-archive] project.
     1. [ ] For all other changes, move your file to the [**Misc archive**][misc-archive] project.
     1. [ ] If you’re a community contributor, please consider [transfering ownership of your draft file](https://help.figma.com/hc/en-us/articles/360040530853) to the maintainer so they can move it to our archive, along with its version history and comments.
1. [x] **Assignee** (or Maintainer, for community contributions): If it’s a new
   pattern or a significant change, add an agenda item to the next UX weekly call to inform the team.
1. [x] **Assignee**: When applicable, add or update relevant documentation and create an MR with your changes using the `Documentation` MR template. If you do not have the capacity, [create another issue using the `Component documentation` issue template][issue-component-template] so we don't forget about it. Mark the new issue as related to this one. Bring the issue to your team planning session for prioritization and scheduling. 
1. [x] **Assignee**: When applicable, [create a GitLab UI issue using the `Component` issue template][gitlab-ui-component-template] to build or update the component code. Mark the new issue as related to this one. Bring the issue to your team planning session for prioritization and scheduling. 
1. [ ] **Assignee**: 🎉 Congrats, you made it! You can now close this issue.

[annotation]: https://gitlab.com/gitlab-org/gitlab-services/design.gitlab.com/-/blob/main/doc/pajamas-ui-kit.md#adding-descriptions-notes-and-annotations
[building]: https://gitlab.com/gitlab-org/gitlab-services/design.gitlab.com/-/blob/main/doc/pajamas-ui-kit.md#building-components
[foundations-team]: https://about.gitlab.com/company/team/?department=ecosystem-foundations-team
[figma-maintainer]: https://about.gitlab.com/handbook/engineering/projects/#design.gitlab.com
[publishing]: https://gitlab.com/gitlab-org/gitlab-services/design.gitlab.com/-/blob/main/doc/pajamas-ui-kit.md#publishing-changes
[structure]: https://gitlab.com/gitlab-org/gitlab-services/design.gitlab.com/-/blob/main/doc/pajamas-ui-kit.md#structure
[component-guideline-template]: https://gitlab.com/gitlab-org/gitlab-services/design.gitlab.com/-/blob/main/.gitlab/merge_request_templates/component-guideline.md
[component-archive]: https://www.figma.com/files/project/5472112/Component-archive
[misc-archive]: https://www.figma.com/files/project/10620392/Misc-archive
[gitlab-ui-component-template]: https://gitlab.com/gitlab-org/gitlab-ui/-/issues/new?issuable_template=Component
[issue-component-template]: https://gitlab.com/gitlab-org/gitlab-services/design.gitlab.com/-/issues/new?issuable_template=Component%20documentation

Story points: 1.0