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/crowdsec.json

@@ -0,0 +1,40 @@
+{
+  "name": "CrowdSec",
+  "slug": "crowdsec",
+  "categories": [
+    6
+  ],
+  "date_created": "2024-05-02",
+  "type": "addon",
+  "updateable": false,
+  "privileged": false,
+  "interface_port": null,
+  "documentation": "https://doc.crowdsec.net/",
+  "website": "https://crowdsec.net/",
+  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/crowdsec.webp",
+  "config_path": "",
+  "description": "CrowdSec is a free and open-source intrusion prevention system (IPS) designed to provide network security against malicious traffic. It is a collaborative IPS that analyzes behaviors and responses to attacks by sharing signals across a community of users. CrowdSec leverages the collective intelligence of its users to detect and respond to security threats in real-time. With CrowdSec, network administrators can set up protection against a wide range of threats, including malicious traffic, bots, and denial-of-service (DoS) attacks. The software is designed to be easy to use and integrate with existing security systems, making it a valuable tool for enhancing the security of any network.",
+  "install_methods": [
+    {
+      "type": "default",
+      "script": "tools/addon/crowdsec.sh",
+      "resources": {
+        "cpu": null,
+        "ram": null,
+        "hdd": null,
+        "os": null,
+        "version": null
+      }
+    }
+  ],
+  "default_credentials": {
+    "username": null,
+    "password": null
+  },
+  "notes": [
+    {
+      "text": "Execute within an existing LXC Console. Debian only!",
+      "type": "warning"
+    }
+  ]
+}