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/traefik.json

@@ -0,0 +1,46 @@
+{
+  "name": "Traefik",
+  "slug": "traefik",
+  "categories": [
+    21
+  ],
+  "date_created": "2024-05-20",
+  "type": "ct",
+  "updateable": true,
+  "privileged": false,
+  "interface_port": 8080,
+  "documentation": "https://doc.traefik.io/",
+  "website": "https://traefik.io/",
+  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/traefik.webp",
+  "config_path": "/etc/traefik/traefik.yaml",
+  "description": "Traefik (pronounced traffic) is an open-source edge router and reverse proxy that simplifies managing microservices. It automatically discovers services, dynamically updates routing rules without downtime, provides load balancing, handles SSL termination, and supports various middleware for added functionality. Ideal for cloud-native environments, it integrates seamlessly with platforms like Docker and Kubernetes.",
+  "install_methods": [
+    {
+      "type": "default",
+      "script": "ct/traefik.sh",
+      "resources": {
+        "cpu": 1,
+        "ram": 512,
+        "hdd": 2,
+        "os": "debian",
+        "version": "13"
+      }
+    },
+    {
+      "type": "alpine",
+      "script": "ct/alpine-traefik.sh",
+      "resources": {
+        "cpu": 1,
+        "ram": 512,
+        "hdd": 1,
+        "os": "alpine",
+        "version": "3.23"
+      }
+    }
+  ],
+  "default_credentials": {
+    "username": null,
+    "password": null
+  },
+  "notes": []
+}