Initial Cloudron package for Jellyseerr

- Add CloudronManifest.json with app configuration
- Add Dockerfile with Node.js 22 support and multi-stage build
- Add start.sh script for runtime initialization
- Add icon.png for the app
- Update README.md with installation and usage instructions
- Configure config directory symlink to /app/data for persistent storage

CloudronManifest.json

@@ -0,0 +1,20 @@
+{
+  "id": "jellyseerr.com",
+  "title": "Jellyseerr",
+  "author": "Jellyseerr",
+  "description": "Jellyseerr is a free and open source software application for managing requests for your media library. It works with Jellyfin, Plex, and Emby.",
+  "tagline": "Request and discover media",
+  "version": "1.0.0",
+  "healthCheckPath": "/",
+  "httpPort": 5055,
+  "addons": {
+    "localstorage": {}
+  },
+  "manifestVersion": 2,
+  "website": "https://github.com/Fallenbagel/jellyseerr",
+  "contactEmail": "support@jellyseerr.com",
+  "icon": "file://icon.png",
+  "tags": [ "media", "jellyfin", "plex", "emby", "requests" ],
+  "mediaLinks": []
+}
+