Add Elm boilerplate to project

Create a top-level client directory to store my Elm boilerplate.

client/src/State.elm

@@ -0,0 +1,43 @@
+module State exposing (..)
+
+
+type Msg
+    = DoNothing
+    | SetView View
+
+
+type View
+    = Landing
+    | Login
+
+
+type alias Model =
+    { isLoading : Bool
+    , view : View
+    }
+
+
+{-| The initial state for the application.
+-}
+init : Model
+init =
+    { isLoading = False
+    , view = Landing
+    }
+
+
+{-| Now that we have state, we need a function to change the state.
+-}
+update : Msg -> Model -> ( Model, Cmd Msg )
+update msg model =
+    case msg of
+        DoNothing ->
+            ( model, Cmd.none )
+
+        SetView x ->
+            ( { model
+                | view = x
+                , isLoading = True
+              }
+            , Cmd.none
+            )