Move `gitlab_team_member_badge.vue` to EE directory

What does this MR do?

Moves the gitlab_team_member_badge.vue component to the /ee directory along with associated tests. This is a feature that will only exist on gitlab.com so it is not needed in the CE build. This was brought to my attention in this thread: !29196 (comment 322827676)

I also asked this question in Slack: https://gitlab.slack.com/archives/C02PF508L/p1588864669453200

Screenshots

No visual change

Local Testing

1. Enable :gitlab_employee_badge feature flag.
   • bin/rails console
   • Feature.enable(:gitlab_employee_badge)
2. In lib/gitlab.rb change self.com? to return true

Note: You may need to run gdk restart because of the caching on app/models/user.rb

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry - Currently behind the gitlab_employee_badge feature flag and this is a "developer-facing" change.
• [-] 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