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.

types.ts

@@ -0,0 +1,35 @@
+export enum VoiceName {
+  Puck = 'Puck',
+  Charon = 'Charon',
+  Kore = 'Kore',
+  Fenrir = 'Fenrir',
+  Zephyr = 'Zephyr',
+}
+
+export enum PlaybackStatus {
+  IDLE = 'IDLE',
+  LOADING_TEXT = 'LOADING_TEXT',
+  LOADING_AUDIO = 'LOADING_AUDIO',
+  READY = 'READY',
+  PLAYING = 'PLAYING',
+  PAUSED = 'PAUSED',
+  ERROR = 'ERROR',
+  COMPLETED = 'COMPLETED'
+}
+
+export interface Article {
+  id: string;
+  url: string;
+  title: string;
+  text: string;
+  audioUrl?: string; // Blob URL for the WAV file
+  status: PlaybackStatus;
+  errorMessage?: string;
+}
+
+export interface PlayerState {
+  isPlaying: boolean;
+  playbackRate: number;
+  currentArticleId: string | null;
+  selectedVoice: VoiceName;
+}