Copy filename with line number for the first change

Description

Now that after gitlab-ce#23591 I discovered we have a button to copy filename from diff... I love it so much, but it would be even better to include the line number for the first change, something like:

spec/features/projects/pipelines_spec.rb:93

Because I always use cmd+t to go to the file and line number with above path in Sublime Text 3, with this button then I don't even need to check where the line is and manually jump to there.

Proposal

Not sure how to do this best, since I believe we should keep the filename button, but adding another button with very similar functionality is quite confusing I believe. However I really hope we could have this feature :P