refactor: remove frontend, move JSONs to json/ top-level

- Archive frontend to community-scripts/ProxmoxVE-Frontend-Archive
- Move frontend/public/json/ -> json/
- Update workflow paths in 5 actions:
  - update-versions-github.yml
  - update-json-date.yml
  - push-json-to-pocketbase.yml
  - delete-pocketbase-entry-on-removal.yml
  - autolabeler.yml
- Remove frontend-cicd.yml (no longer needed)
- Clean up .gitignore (remove frontend-specific entries)

json/configarr.json

@@ -0,0 +1,40 @@
+{
+  "name": "Configarr",
+  "slug": "configarr",
+  "categories": [
+    14
+  ],
+  "date_created": "2025-05-21",
+  "type": "ct",
+  "updateable": true,
+  "privileged": false,
+  "interface_port": 8989,
+  "documentation": "https://configarr.raydak.de/docs/intro",
+  "config_path": "/opt/configarr/config.yml",
+  "website": "https://configarr.raydak.de/",
+  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/configarr.webp",
+  "description": "Configarr is an open-source tool designed to simplify configuration and synchronization for Sonarr and Radarr (and other experimental). It integrates with TRaSH Guides to automate updates of custom formats, quality profiles, and other settings, while also supporting user-defined configurations.",
+  "install_methods": [
+    {
+      "type": "default",
+      "script": "ct/configarr.sh",
+      "resources": {
+        "cpu": 1,
+        "ram": 512,
+        "hdd": 4,
+        "os": "Debian",
+        "version": "13"
+      }
+    }
+  ],
+  "default_credentials": {
+    "username": null,
+    "password": null
+  },
+  "notes": [
+    {
+      "text": "change secrets file /opt/configarr/secrets.yml",
+      "type": "info"
+    }
+  ]
+}