feat(seeding): simplify seeded-root config by importing pre-existing …

…prefilled-root config

config/app/init/initializers/seeded-root.json

@@ -1,28 +1,9 @@
 {
   "@context": "https://linkedsoftwaredependencies.org/bundles/npm/@solid/community-server/^3.0.0/components/context.jsonld",
+  "import": [
+    "files-scs:config/app/init/initializers/prefilled-root.json"
+  ],
   "@graph": [
-    {
-      "comment": "Makes sure the root container exists and contains the necessary resources.",
-      "@id": "urn:solid-server:default:RootInitializer",
-      "@type": "ConditionalHandler",
-      "storageKey": "rootInitialized",
-      "storageValue": true,
-      "storage": { "@id": "urn:solid-server:default:SetupStorage" },
-      "source": {
-        "@type": "ContainerInitializer",
-        "args_baseUrl": { "@id": "urn:solid-server:default:variable:baseUrl" },
-        "args_path": "/",
-        "args_store": { "@id": "urn:solid-server:default:ResourceStore" },
-        "args_generator": {
-          "@type": "TemplatedResourcesGenerator",
-          "templateFolder": "@css:templates/root/prefilled",
-          "factory": { "@type": "ExtensionBasedMapperFactory" },
-          "templateEngine": { "@type": "HandlebarsTemplateEngine" }
-        },
-        "args_storageKey": "rootInitialized",
-        "args_storage": { "@id": "urn:solid-server:default:SetupStorage" }
-      }
-    },
     {
       "comment": "This is where the seeded pod configurations will be stored.",
       "@id": "urn:solid-server:default:SeededPodConfigurationStorage",