fix(translatorApi): only start session if not already started

Author: pleinx

src/TranslatorAPI.php

@@ -2,7 +2,9 @@
 
     namespace MultilangAny;
 
-    session_start();
+    if (session_status() === PHP_SESSION_NONE) {
+        session_start();
+    }
 
     use MultilangAny\Settings AS TranslatorSettings;