streamlink-webui (#4262)

* 'Add new script'

* Update streamlink-webui.sh

---------

Co-authored-by: push-app-to-main[bot] <203845782+push-app-to-main[bot]@users.noreply.github.com>
Co-authored-by: Tobias <96661824+CrazyWolf13@users.noreply.github.com>

frontend/public/json/streamlink-webui.json

@@ -0,0 +1,40 @@
+{
+  "name": "Streamlink WebUI",
+  "slug": "streamlink-webui",
+  "categories": [
+    11
+  ],
+  "date_created": "2025-05-05",
+  "type": "ct",
+  "updateable": true,
+  "privileged": false,
+  "interface_port": 8000,
+  "documentation": "https://github.com/CrazyWolf13/streamlink-webui",
+  "config_path": "/opt/streamlink-webui.env",
+  "website": "https://github.com/CrazyWolf13/streamlink-webui",
+  "logo": null,
+  "description": "a simple web-ui to the well-known streamlink cli application, which allows you to save twitch streams to your local disk.",
+  "install_methods": [
+    {
+      "type": "default",
+      "script": "ct/streamlink-webui.sh",
+      "resources": {
+        "cpu": 2,
+        "ram": 2048,
+        "hdd": 5,
+        "os": "Debian",
+        "version": "12"
+      }
+    }
+  ],
+  "default_credentials": {
+    "username": "null",
+    "password": "null"
+  },
+  "notes": [
+    {
+      "text": "This app requires a Twitch cliend_ID and client_secret, set it in the config file. Look in the application documentation on how to obtain it.",
+      "type": "info"
+    }
+  ]
+}