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/fileflows.json

@@ -0,0 +1,40 @@
+{
+  "name": "FileFlows",
+  "slug": "fileflows",
+  "categories": [
+    13
+  ],
+  "date_created": "2025-03-24",
+  "type": "ct",
+  "updateable": true,
+  "privileged": false,
+  "interface_port": 19200,
+  "documentation": "https://fileflows.com/docs",
+  "website": "https://fileflows.com/",
+  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/fileflows.webp",
+  "config_path": "/opt/fileflows/Data/server.config",
+  "description": "FileFlows is a powerful, open-source tool for automating media file processing workflows, including encoding, decoding, and media management. It offers an intuitive GUI and extensive plugin support, making it ideal for tasks like video transcoding, organizing, and managing large media libraries.",
+  "install_methods": [
+    {
+      "type": "default",
+      "script": "ct/fileflows.sh",
+      "resources": {
+        "cpu": 2,
+        "ram": 2048,
+        "hdd": 8,
+        "os": "Debian",
+        "version": "13"
+      }
+    }
+  ],
+  "default_credentials": {
+    "username": null,
+    "password": null
+  },
+  "notes": [
+    {
+      "text": "With Privileged/Unprivileged Hardware Acceleration Support",
+      "type": "info"
+    }
+  ]
+}