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/bytestash.json

@@ -0,0 +1,35 @@
+{
+  "name": "ByteStash",
+  "slug": "bytestash",
+  "categories": [
+    20
+  ],
+  "date_created": "2025-02-27",
+  "type": "ct",
+  "updateable": true,
+  "privileged": false,
+  "interface_port": 3000,
+  "documentation": "https://github.com/jordan-dalby/ByteStash/wiki",
+  "website": "https://github.com/jordan-dalby/ByteStash",
+  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/bytestash.webp",
+  "config_path": "",
+  "description": "ByteStash is a self-hosted web application designed to store, organise, and manage your code snippets efficiently. With support for creating, editing, and filtering snippets, ByteStash helps you keep track of your code in one secure place.",
+  "install_methods": [
+    {
+      "type": "default",
+      "script": "ct/bytestash.sh",
+      "resources": {
+        "cpu": 1,
+        "ram": 1024,
+        "hdd": 4,
+        "os": "debian",
+        "version": "13"
+      }
+    }
+  ],
+  "default_credentials": {
+    "username": null,
+    "password": null
+  },
+  "notes": []
+}