Display a badge to indicate that a user is a GitLab Team Member
# Problem
> Community members cannot easily see when a GitLab employee is engaging with them on an issue, MR, Epic, etc
We also need to do this so that the GitLab team can see who's opened an issue for things like access requests.
# Proposal
Using the logic implemented in !30884 display the following icon in these locations:
- [x] After the `Opened by firstname lastname` before the emoji icon - !28257
- [x] After the `firstname lastname` in issue/MR/epic lists - e.g. https://gitlab.com/gitlab-org/gitlab/-/issues before the emoji icon - !28257
- [x] After the `@username` on issue/MR/epic/snippet comments (as per the below image) - !28243
- [x] Prevent wrapping of badge on mobile #214089
### Design

Tooltip that says `GitLab Team Member` is displayed on hover.
### Rule of thumb for placement of badge:
* If `@username` is displayed
* The badge is displayed to the right of `@username`
* If `@username` is not displayed
* The badge is displayed to the right of `firstname` `lastname` (before the emoji)
# Feature Flag Checklist
Checklist to complete before enabling `gitlab_employee_badge` feature flag
- [x] !30884
- [x] !28837 - (will be closed per this comment: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/30884#note_336490054)
- [x] !29196
- [x] Ping security for a review
- [x] Docs? (`@mjang1` has been pinged)
- [ ] Ensure feature flag checklist is complete on #207118
# Follow up issues
- User Profile - #213269
- User Popover - #213271
- User `@mentions` - #213272
- Issue/MR assignee - #216649
# Screenshots
| Page | Before | After |
| --- | --- | --- |
| Issue List |  |  |
| MR List |  |  |
| Epic List |  |  |
| Issue |  |  |
| MR |  |  |
issue