Added missing "use" Statements.

Now Eclipse PDT shows correct code completion.

Author: schube

FMDataAPI.php

@@ -10,6 +10,10 @@
 
 namespace INTERMediator\FileMakerServer\RESTAPI;
 
+use INTERMediator\FileMakerServer\RESTAPI\Supporting\FileMakerLayout;
+use INTERMediator\FileMakerServer\RESTAPI\Supporting\FileMakerRelation;
+use Exception;
+
 /**
  * Class FMDataAPI is the wrapper of The REST API in FileMaker Server 18/Cloud.
  *
@@ -350,6 +354,8 @@ public function getReturnedCount()
 
 namespace INTERMediator\FileMakerServer\RESTAPI\Supporting;
 
+use Exception;
+
 /**
  * Class FileMakerLayout is the proxy of layout in FileMaker database.
  * The object of this class is going to be generated by the FMDataAPI class,