Marwari

### 🚀 The feature

This issue proposes adding Marwari (mwr) language support to the Resonate app.

I am a native speaker of Marwari, a regional language primarily spoken in Rajasthan and widely understood in parts of Madhya Pradesh. I can ensure translations are linguistically accurate and culturally appropriate.

I understand that Marwari uses a 3-letter language code (mwr) and may require additional configuration similar to Rajasthani. I’m comfortable handling the necessary setup and following the existing translation guidelines.

Once approved, I will add complete translations with key parity and ensure proper integration as per TRANSLATIONS.md.

### Motivation, pitch

Resonate currently does not support Marwari (mwr), which limits accessibility for native speakers of the language. As a native Marwari speaker, I want to contribute accurate and culturally relevant translations so the app can better serve users from Rajasthan and surrounding regions.

This feature aligns with the project’s goal of expanding multilingual support and complements existing work on regional languages like Rajasthani. Adding Marwari will improve inclusivity while following the established translation and configuration patterns.