Add additional imports people are likely to need.

src/Console/Templates/default/classes/behavior.ctp

@@ -16,6 +16,7 @@ echo "<?php\n"; ?>
 namespace <?= $namespace ?>\Model\Behavior;
 
 use Cake\ORM\Behavior;
+use Cake\ORM\Table;
 
 /**
  * <?= $name ?> behavior

src/Console/Templates/default/classes/component.ctp

@@ -16,6 +16,7 @@ echo "<?php\n"; ?>
 namespace <?= $namespace ?>\Controller\Component;
 
 use Cake\Controller\Component;
+use Cake\Controller\ComponentRegistry;
 
 /**
  * <?= $name ?> component

src/Console/Templates/default/classes/helper.ctp

@@ -16,6 +16,7 @@ echo "<?php\n"; ?>
 namespace <?= $namespace ?>\View\Helper;
 
 use Cake\View\Helper;
+use Cake\View\View;
 
 /**
  * <?= $name ?> helper