Support for Lucid HTML, add static file middleware

src/Core.hs

@@ -15,6 +15,7 @@ import Effectful.Error.Static               (Error, throwError)
 import Effectful.Reader.Static              (Reader)
 import GHC.Generics                         (Generic)
 import Servant hiding                       ((:>), throwError)
+import Servant.HTML.Lucid
 
 --
 -- Core data types