Option for pickers to return a single result per file

[echo-bravo-yahoo]

Is your feature request related to a problem? Please describe.
Often, I'd like to locate a reference/token/concept in a code-base and am only looking for file granularity. Because I'm searching file contents, I use :Telescope live_grep, but often, the sort algorithm puts 10's of entries from the same file in a row, making it difficult to browse usages in various files. I'm not picky about which usage from a file is displayed (first might be fastest but will usually just be imports, last might be slower, but more likely to be real usage); either seem usable.

Describe the solution you'd like
An option for pickers like {max_results_per_file} (number).

Describe alternatives you've considered
I have not explored other alternatives, and would be happy to hear any way these sorts of workflows can be supported with existing opts/commands.