fix: permission roles trait service error (#18)

The "FrontendPermissionToolkitBundle\Service" service or alias has been removed or inlined when the container was compiled. You should either make it public, or stop using the container directly and use dependency injection instead.
Fixed by making service configuration public

Author: kjkooistra-youwe

src/Resources/config/services.yml

@@ -1,8 +1,9 @@
 services:
 
     FrontendPermissionToolkitBundle\Service:
+        public: true
         autoconfigure: true
         autowire: true
 
     bundle.frontendpermissiontoolkit.service:
-        alias: FrontendPermissionToolkitBundle\Service
+        alias: FrontendPermissionToolkitBundle\Service