Remove JSON and frontend folders

To shrink size of PR to make GitHub not lag

json/nzbget.json

@@ -1,34 +0,0 @@
-{
-    "name": "NZBGet",
-    "slug": "nzbget",
-    "categories": [
-        0
-    ],
-    "date_created": "2024-10-31",
-    "type": "ct",
-    "updateable": true,
-    "privileged": false,
-    "interface_port": 6789,
-    "documentation": null,
-    "website": "https://nzbget.com/",
-    "logo": "https://avatars.githubusercontent.com/u/3368377?s=200&v=4",
-    "description": "NZBGet is a Usenet downloader focused on efficiency and performance, designed to handle NZB files for downloading content from Usenet. It automates downloading, checking, repairing, and extracting files, optimizing resources to run well on lower-powered devices.",
-    "install_methods": [
-        {
-            "type": "default",
-            "script": "ct/nzbget.sh",
-            "resources": {
-                "cpu": 2,
-                "ram": 2048,
-                "hdd": 4,
-                "os": "debian",
-                "version": "12"
-            }
-        }
-    ],
-    "default_credentials": {
-        "username": "nzbget",
-        "password": "tegbzn6789"
-    },
-    "notes": []
-}