feat: Add image uploader and metadata viewer components

- Implemented ImageUploader.svelte for drag-and-drop image uploads with metadata extraction.
- Created MetadataViewer.svelte to display extracted metadata in a user-friendly format.
- Added PrivacyInfo.svelte to inform users about client-side processing and privacy risks.
- Introduced ThemeToggle.svelte for dark mode functionality.
- Set up main.js for application entry point and configured Svelte with vite.
- Added Tailwind CSS for styling and configured Vite for asset management.
- Established svelte.config.js and tailwind.config.js for project settings.

tailwind.config.js

@@ -0,0 +1,8 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  content: ['./src/**/*.{html,js,svelte,ts}'],
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+}