Add a criterion benchmark

bench/data/simple-cabal/Main.hs

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+module Main where
+
+main :: IO ()
+main = putStrLn "Hello, Haskell!"

bench/data/simple-cabal/Setup.hs

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+import Distribution.Simple
+main = defaultMain

bench/data/simple-cabal/simple-cabal.cabal

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+name:                simple-cabal
+version:             0.1.0.0
+license:             BSD3
+license-file:        LICENSE
+author:              Daniel Gröber
+maintainer:          dxld@darkboxed.org
+build-type:          Simple
+cabal-version:       >=1.10
+
+executable simple-cabal
+  main-is:             Main.hs
+  build-depends:       base
+  default-language:    Haskell2010