Add Immich install script

This currently only supports CPU machine-learning; CUDA and OpenVINO
will come later.

frontend/public/json/immich.json

@@ -0,0 +1,43 @@
+{
+  "name": "Immich",
+  "slug": "immich",
+  "categories": [
+    13
+  ],
+  "date_created": "2025-03-30",
+  "type": "ct",
+  "updateable": false,
+  "privileged": false,
+  "interface_port": 2283,
+  "documentation": "https://immich.app/docs/overview/introduction",
+  "website": "https://immich.app",
+  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons/png/immich.png",
+  "description": "High performance self-hosted photo and video management solution.",
+  "install_methods": [
+    {
+      "type": "default",
+      "script": "ct/immich.sh",
+      "resources": {
+        "cpu": 4,
+        "ram": 4096,
+        "hdd": 12,
+        "os": "Debian",
+        "version": "12"
+      }
+    }
+  ],
+  "default_credentials": {
+    "username": null,
+    "password": null
+  },
+  "notes": [
+    {
+      "text": "Change the machine-learning URL to `http://localhost:3003` after installation",
+      "type": "info"
+    },
+    {
+      "text": "GPU acceleration is not enabled for this installation",
+      "type": "info"
+    }
+  ]
+}