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/prowlarr.json

@@ -0,0 +1,35 @@
+{
+  "name": "Prowlarr",
+  "slug": "prowlarr",
+  "categories": [
+    14
+  ],
+  "date_created": "2024-05-02",
+  "type": "ct",
+  "updateable": true,
+  "privileged": false,
+  "interface_port": 9696,
+  "documentation": "https://wiki.servarr.com/prowlarr",
+  "website": "https://github.com/Prowlarr/Prowlarr",
+  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/prowlarr.webp",
+  "config_path": "/var/lib/prowlarr/",
+  "description": "Prowlarr is a software tool designed to integrate with various PVR (Personal Video Recorder) apps. It is built on a popular *arr .net/ReactJS base stack and serves as an indexer manager and proxy. Prowlarr makes it easy to manage and organize TV show and movie collections, by integrating with popular PVR apps and automating the downloading and organizing of media files. The software provides a web-based interface for managing and organizing TV shows and movies, making it easy to search and find content. Prowlarr also supports metadata management, including show and movie information, making it easy for users to keep their media collection organized and up-to-date. The software is designed to be easy to use and provides a simple and intuitive interface for managing and organizing media collections, making it a valuable tool for media enthusiasts who want to keep their collection organized and up-to-date. With Prowlarr, users can enjoy their media collection from anywhere, making it a powerful tool for managing and sharing media files.",
+  "install_methods": [
+    {
+      "type": "default",
+      "script": "ct/prowlarr.sh",
+      "resources": {
+        "cpu": 2,
+        "ram": 1024,
+        "hdd": 4,
+        "os": "debian",
+        "version": "13"
+      }
+    }
+  ],
+  "default_credentials": {
+    "username": null,
+    "password": null
+  },
+  "notes": []
+}