Add file copy ability to code search results

Proposal

I'm often searching and finding files and want to open them in my editor of choice. When I review code in an MR, I see a copy icon that copies the name/path of the file to the clipboard, so I can easily open it in my editor. It would be great to add this functionality to search results to copy the file's name from the results easily.

Code Review

Orignal Title:

Release Notes

It's quite often that users need to find files with their paths. Previously, only files that contained searchable code were findable using Advanced Search.

Advanced Search now offers the ability to find any file in any GitLab repo then easily copy the filename path from code search results.