Add client-side detection for GitLab tokens

What does this MR do and why?

It adds client-side detection for GitLab tokens.

glimt-, glagent- and glppt- are now detected. glft- detection was improved.

Closes #446095 (closed)

MR acceptance checklist

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Screenshots or screen recordings

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Before	After
N/A

How to set up and validate locally

Post secrets following the patterns that were added in this MR in markdown fields such as issue descriptions and observe the pop up shown above in the screenshot section. For token examples you can use the ones added in the spec file.