Add "share" button

[Test-Account666]

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Before opening an issue, take a few minutes to search the issue tracker (both open and closed issues) for the feature you are requesting. This will reduce the need for issue triage and save time.

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Describe the feature

A button to share the current page (Repo, opened file, etc.)

Would basically just copy the current URL.
Like https://gitlab.com/SomeGroup/SomeProject/

Additional context

Would be very helpful, if you want to share a line of code in one of your projects quickly.

Declaration

• I have carefully read and agree to follow the contribution guidelines.