Created graphql user_type

app/graph/types/user_type.rb

@@ -0,0 +1,11 @@
+UserType = GraphQL::ObjectType.define do
+  name "User"
+  description "An user entry, returns basic user information"
+  # Expose fields associated with User model
+  field :id, types.ID, "The id of this user"
+  field :created_at, types.String, "Date when this user was created"
+  field :username, types.String, "The username of this user"
+  field :geozone_id, types.Int, "The ID of the geozone where this user is active"
+  field :gender, types.String, "The gender of this user"
+  field :date_of_birth, types.String, "The birthdate of this user"
+end