⚙️ Move preferred formatter to its own config field

config/default.go

@@ -30,6 +30,10 @@ format = "plain"
 
 [formatters]
 
+# Default formatter used. Some outputs can override this value
+preferred = "plain"
+
+# Each formatter may have additional configuration
 [formatters.json]
 # Set to true to pretty print JSON output
 pretty_print = false