Completely replace outdated template config rendering

- Deleted respective old files
- Renamed new components

web/frontend/src/config.entrypoint.js

@@ -0,0 +1,12 @@
+import {} from './header.entrypoint.js'
+import Config from './Config.root.svelte'
+
+new Config({
+    target: document.getElementById('svelte-app'),
+    props: {
+        user: user
+    },
+    context: new Map([
+            ['cc-config', clusterCockpitConfig]
+    ])
+})