Remove JSON and frontend folders

To shrink size of PR to make GitHub not lag

frontend/next.config.mjs

@@ -1,25 +0,0 @@
-/** @type {import('next').NextConfig} */
-const nextConfig = {
-  webpack: (config) => {
-    config.resolve.alias.canvas = false;
-
-    return config;
-  },
-  images: {
-    remotePatterns: [
-      {
-        protocol: "https",
-        hostname: "**",
-      },
-    ],
-  },
-
-  env: {
-    BASE_PATH: "ProxmoxVE",
-  },
-
-  output: "export",
-  basePath: `/ProxmoxVE`,
-};
-
-export default nextConfig;