Added the global GitLab chat toggle
What does this MR do and why?
The MR introduces a new global toggle for the GitLab Chat as designed in https://gitlab.com/gitlab-org/gitlab-services/design.gitlab.com/-/issues/1597/
The introduced button is just a new entry point for the already-existing GitLab chat functionality which can be found in Help
Screenshots or screen recordings
| Default look | When clicked |
|---|---|
 |
 |
How to set up and validate locally
MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
-
I have evaluated the MR acceptance checklist for this MR.
Related to https://gitlab.com/gitlab-org/gitlab-services/design.gitlab.com/-/issues/1597/