qa: add missing type-hints to workflow Transition

Signed-off-by: Maximilian Bösing <2189546+boesing@users.noreply.github.com>

Author: boesing

Transition.php

@@ -32,16 +32,25 @@ public function __construct(string $name, $froms, $tos)
         $this->tos = (array) $tos;
     }
 
+    /**
+     * @return string
+     */
     public function getName()
     {
         return $this->name;
     }
 
+    /**
+     * @return string[]
+     */
     public function getFroms()
     {
         return $this->froms;
     }
 
+    /**
+     * @return string[]
+     */
     public function getTos()
     {
         return $this->tos;