Initial project setup

- Tauri 2.0 + Svelte + TypeScript scaffolding
- Qobuz API client implementation (Rust)
  - Bundle token extraction
  - User authentication
  - Request signing (MD5 signatures)
  - Search/browse endpoints
  - Stream URL retrieval with quality fallback
- Tauri commands for frontend IPC
- Module stubs for player, queue, config

src-tauri/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    tauri_build::build()
+}