Do not use absolute paths, use PackagePath instead

We should avoid using absolute paths where possible. The correct solution is using PackagePaths, which are available in ARON as well.

source/armarx/control/retrieve_hand/aron/RetrieveHandParams.xml

@@ -2,6 +2,7 @@
 <AronTypeDefinition>
     <AronIncludes>
         <Include include="RobotAPI/libraries/aron/common/aron/framed.xml" />
+        <Include include="RobotAPI/libraries/aron/common/aron/PackagePath.xml" />
     </AronIncludes>
     <GenerateTypes>
         <Object name="::armarx::control::retrieve_hand::skills::RetrieveHandParams">
@@ -40,7 +41,7 @@
 
             <ObjectChild key="fileNames">
                 <List>
-                    <String/>
+                    <armarx::arondto::PackagePath/>
                 </List>
             </ObjectChild>