Fix GraphQL bonus types (and fixes tests)

This commit fixes those GQL types which were defined as an empty
record, as this was rejected in the latest versions of
`morpheus-graphql`.

src/Gargantext/API/GraphQL/IMT.hs

 {-# LANGUAGE DeriveAnyClass #-}
-{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE DerivingStrategies #-}
 
 module Gargantext.API.GraphQL.IMT
   ( School(..)
@@ -13,10 +13,11 @@ import Gargantext.API.GraphQL.Types
 import Gargantext.Core.Ext.IMT (School(..), schools)
 import Gargantext.Prelude
 
-data SchoolsArgs
-  = SchoolsArgs
-    { } deriving (Generic, GQLType)
+newtype SchoolsArgs
+  = SchoolsArgs ()
+    deriving stock (Generic)
+    deriving anyclass (GQLType)
 
 resolveSchools
   :: SchoolsArgs -> GqlM e env [School]
-resolveSchools SchoolsArgs { } = pure $ schools
+resolveSchools (SchoolsArgs ()) = pure $ schools

src/Gargantext/API/GraphQL/NLP.hs

 {-# LANGUAGE DeriveAnyClass #-}
-{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE DerivingStrategies #-}
 
 module Gargantext.API.GraphQL.NLP
   ( Lang(..)
@@ -18,9 +18,10 @@ import Gargantext.Prelude
 import Protolude
 import qualified Data.Map.Strict as Map
 
-data LanguagesArgs
-  = LanguagesArgs
-    { } deriving (Generic, GQLType)
+newtype LanguagesArgs
+  = LanguagesArgs ()
+    deriving stock (Generic)
+    deriving anyclass (GQLType)
 
 type LanguagesMap = Map.Map Lang NLPServer
 
@@ -33,7 +34,7 @@ data NLPServer = NLPServer
 
 resolveLanguages
   :: HasNLPServer env => LanguagesArgs -> GqlM e env LanguagesMap
-resolveLanguages LanguagesArgs { } = do
+resolveLanguages ( LanguagesArgs () ) = do
   -- pure $ allLangs
   lift $ do
     ns <- view nlpServer