(🎁) Minimize diffs of files matching `linguist-generated` in .gitattributes

According to the referenced specification, any file that matches a linguist-generated annotation within the .gitattributes file should be 'hidden' (read: minimized) in a diff. Currently this is not the case as of Gitlab 15.8.1-ee.

This would be a based feature as I don't want to look at massive lock files etc all the time.

test.txt linguist-generated