Update app version to 0.1.4 and integrate @tanstack/react-router for improved routing functionality

- Bumped version for @voicebox/app, @voicebox/landing, @voicebox/tauri, and @voicebox/web to 0.1.4.
- Added @tanstack/react-router dependency for enhanced routing capabilities.
- Refactored App component to utilize RouterProvider for routing management.
- Created a new router configuration in router.tsx to define application routes and layout.
- Updated Sidebar component to use Link from @tanstack/react-router for navigation.

tauri/src-tauri/Cargo.lock

@@ -4840,7 +4840,7 @@ checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
 [[package]]
 name = "voicebox"
-version = "0.1.3"
+version = "0.1.4"
 dependencies = [
  "base64 0.22.1",
  "core-foundation-sys",