Refactor Zitadel script to support Login V2

frontend/public/json/zitadel.json

@@ -0,0 +1,44 @@
+{
+  "name": "Zitadel",
+  "slug": "zitadel",
+  "categories": [
+    6
+  ],
+  "date_created": "2025-02-10",
+  "type": "ct",
+  "updateable": true,
+  "privileged": false,
+  "interface_port": 8080,
+  "documentation": "https://zitadel.com/docs/guides/overview",
+  "website": "https://zitadel.com",
+  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/zitadel.webp",
+  "config_path": "/etc/zitadel/config.yaml",
+  "description": "Zitadel is an open-source identity and access management (IAM) solution designed to provide secure authentication, authorization, and user management for modern applications and services. Built with a focus on flexibility, scalability, and security, Zitadel offers a comprehensive set of features for developers and organizations looking to implement robust identity management.",
+  "install_methods": [
+    {
+      "type": "default",
+      "script": "ct/zitadel.sh",
+      "resources": {
+        "cpu": 1,
+        "ram": 1024,
+        "hdd": 6,
+        "os": "debian",
+        "version": "13"
+      }
+    }
+  ],
+  "default_credentials": {
+    "username": "zitadel-admin@zitadel.localhost",
+    "password": "Password1!"
+  },
+  "notes": [
+    {
+      "text": "Application credentials: `cat /etc/zitadel/INSTALLATION_INFO.txt`",
+      "type": "info"
+    },
+    {
+      "text": "Change the ExternalDomain value in `/etc/zitadel/config.yaml` to your domain/hostname/IP and run `bash zitadel-rerun.sh`",
+      "type": "info"
+    }
+  ]
+}