Provide an easy way to copy the column names to clipboard within Discover

[aarju]

Describe the feature:
Provide an easy way for users to copy the column names within Discover. Currently when you click on a column name it displays the column sorting pop up menu and it is very difficult to highlight the name of the column to copy to a report or other document. This pop up menu could include a 'copy name to clipboard' option, or provide an easy way to highlight the name of the column

Another option would be to add a 'copy name to clipboard' button in the selected fields section when a field name is expanded.

Describe a specific use case for the feature:
When a user clicks on a column name in Discover they can click on the 'copy name to clipboard' option to copy that name to their clipboard

[aarju]

Nevermind, this is a duplicate of #103657