Refactor to specify elixir is supported

Author: jllopes

src/main/scala/com/codacy/plugins/api/languages/Language.scala

@@ -220,14 +220,15 @@ object Languages {
   // Support startdate: September 2017
   case object Kotlin extends Language(extensions = Set(".kt", ".kts"))
 
+  // Support startdate: June 2018
+  case object Elixir extends Language(extensions = Set(".ex", ".exs"))
+
   // Support startdate: August 2018
   case object Powershell
       extends Language(extensions = Set(".ps1", ".psc1", ".psd1", ".psm1", ".ps1xml", ".pssc", ".cdxml", ".clixml"))
 
   // Soon
 
-  case object Elixir extends Language(extensions = Set(".ex", ".exs"))
-
   case object Clojure extends Language(extensions = Set(".clj", ".cljs", ".cljc", ".edn"))
 
   case object Rust extends Language(extensions = Set(".rs", ".rlib"))