file_icons: Associate `.R` files with R (#24907)

Closes #24899

Sorted using:
https://github.com/zed-industries/zed/pull/12487#issue-2325944879

Release Notes:

- N/A

Co-authored-by: Marshall Bowers <git@maxdeviant.com>
216a5e29985brian committed on 2/14/2025, 9:30:09 PM· committed by GitHubparentf943251
1 file changedLine totals unavailable