doc(Cordova): Deprecate Cordova (#17026)

Co-authored-by: Antonis Lilis <antonis.lilis@gmail.com>

Author: lucas-zimerman

docs/platforms/javascript/guides/cordova/index.mdx

@@ -8,6 +8,10 @@ categories:
   - mobile
 ---
 
+<Alert level="warning" title="Deprecation Notice">
+Cordova is being superseded by modern alternatives like [Capacitor](https://ionic.io/resources/articles/capacitor-vs-cordova-modern-hybrid-app-development). This SDK is no longer maintained by Sentry. If you are starting a new project or planning a [migration](https://capacitorjs.com/docs/cordova/migration-strategy), consider using [Sentry Capacitor](/platforms/javascript/guides/capacitor/), [Sentry React Native](/platforms/react-native/), or [Sentry Flutter](/platforms/flutter/) instead.
+</Alert>
+
 <Alert>
   The Cordova SDK uses a native extension for iOS and Android, but will fall
   back to a pure JavaScript version (`@sentry/browser`) if needed.