Adds logo for Radarr, Sonarr, Prowlarr ...

src/lib/services/jellyfin/+service.ts

@@ -0,0 +1,7 @@
+import type { ServiceHandler } from '../service';
+
+export const handle: ServiceHandler = () => {
+	return {
+		logo: 'https://cdn.rawgit.com/jellyfin/jellyfin-ux/master/branding/SVG/icon-transparent.svg'
+	};
+};