Organize application logic by core/feature breakouts, add dhall configuration support and add a range of new config options in the Reader, add example configuration/deployment files

src/Feature/Handlers.hs

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+module Feature.Handlers ( root ) where
+
+import Core.Types
+import qualified Core.Mongo as DB
+
+import Control.Monad.Reader (ask, lift)
+import Data.AesonBson (aesonify)
+import Data.Bson (Document, Field (..), Value (Array, Doc))
+import qualified Data.Text as T
+import qualified Data.Text.Lazy as LT
+import Web.Scotty.Trans (json)
+import Prelude hiding (id)
+
+root :: PurrAction ()
+root = do 
+  config <- lift $ ask
+  docs   <- DB.tempGetDocs config
+  json $ aesonify ["allDocs" := Array (map Doc docs)]