new improved benchmark command that can benchmark anything git-annex does

Types/Benchmark.hs

@@ -0,0 +1,15 @@
+{- git-annex benchmark data types.
+ -
+ - Copyright 2019 Joey Hess <id@joeyh.name>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Types.Benchmark where
+
+import Annex
+import Types.Command
+
+type BenchmarkGenerator = [String] -> Annex (IO ())
+
+type MkBenchmarkGenerator = [Command] -> BenchmarkGenerator