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.

public/vite.svg

@@ -0,0 +1,6 @@
+<svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg">
+  <rect width="32" height="32" rx="8" fill="#2563eb"/>
+  <path d="M8 12h16v8H8v-8z" stroke="white" stroke-width="1.5" fill="none"/>
+  <path d="M11 15l3 3 6-6" stroke="white" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path d="M22 9l3 3-3 3" stroke="white" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>