Increase trust that glab is an official tool during the authentication flow

Problem to solve

When the user is trying to authenticate via the "Web" method, we show the following screen:

Our color usage and button variant guidelines in Pajamas state the following cases for the use of a red color:

Red indicates a problem. It communicates a critical state, destructive action, error, failure, removal, stop, or decline.

Highlight an action that is destructive and undoable or has potentially detrimental consequences.

Potential solutions

At first step, we should not use the red color for the primary button, as this is an official tool and the user should not have to expect "detrimental consequences".

However, to solve the problem correctly, we should find ways to communicate that this is an official tool, maintained by GitLab, to increase the trust and differentiate the flow from any community-provided tools.