Add IteratorAggregate usage for SelectEntries

Makes it possible to leave out the explicit getIterator call
when using SelectEntries.

src/Action/MultiSelectEntries.php

@@ -8,7 +8,7 @@
 /**
  * Select query builder as a fluent object - build query and return entries or flattened fields
  */
-class MultiSelectEntries implements ActionInterface
+class MultiSelectEntries implements ActionInterface, \IteratorAggregate
 {
     /**
      * @var MultiRepositoryReadOnlyInterface

src/Action/MultiSelectEntriesFreeform.php

@@ -10,7 +10,7 @@
 /**
  * Select query builder as a fluent object - build query and return entries or flattened fields
  */
-class MultiSelectEntriesFreeform implements ActionInterface
+class MultiSelectEntriesFreeform implements ActionInterface, \IteratorAggregate
 {
     /**
      * @var MultiRepositoryReadOnlyInterface

src/Action/SelectEntries.php

@@ -7,7 +7,7 @@
 /**
  * Select query builder as a fluent object - build query and return object(s) or flattened fields
  */
-class SelectEntries implements ActionInterface
+class SelectEntries implements ActionInterface, \IteratorAggregate
 {
     /**
      * @var RepositoryReadOnlyInterface Repository we call to execute the built query

src/Generate/RepositoriesGenerateCommand.php

@@ -75,7 +75,7 @@ public function select(): \{namespaceOfBuilders}\SelectEntries
      * so we instead imitate it. This way the implementation in SelectEntries can change
      * and this generated class has no ties to how it "works" or how the repository is used.
      */
-    class SelectEntries implements \Squirrel\Entities\Action\ActionInterface
+    class SelectEntries implements \Squirrel\Entities\Action\ActionInterface, \IteratorAggregate
     {
         /**
          * @var \Squirrel\Entities\Action\SelectEntries