Initial stub for a GraphQL and execute

Data/GraphQL/Execute.hs

@@ -0,0 +1,14 @@
+{-# LANGUAGE CPP #-}
+module Data.GraphQL.Execute where
+
+#if !MIN_VERSION_base(4,8,0)
+import Control.Applicative (Applicative)
+#endif
+
+import qualified Data.Aeson as Aeson (Value)
+
+import Data.GraphQL.AST
+import Data.GraphQL.Schema
+
+execute :: Applicative f => Schema -> Document -> f Aeson.Value
+execute = undefined