feat: Initialize project with basic structure and dependencies

Sets up the foundational elements for the NewsCaster AI application. This includes:
- Initializing the project with Vite and React.
- Defining core types for articles and player state.
- Configuring build tools and TypeScript.
- Adding essential dependencies like React, Vite, and Google's Gemini API client.
- Providing initial README instructions for running locally.
- Setting up basic styling and structure in index.html.
- Defining available voices and playback constants.
- Implementing utility functions for audio handling.

metadata.json

@@ -0,0 +1,5 @@
+{
+  "name": "NewsCaster AI",
+  "description": "A realistic AI news reader that converts article URLs to speech with adjustable speed and pitch preservation.",
+  "requestFramePermissions": []
+}