✨ feat: add image lightbox functionality

- Add imageConfig in astro.config.ts to optimize remote image processing in Markdown files
- Update PhotoSwipe component initialization logic to ensure proper setup on page load

src/layouts/Layout.astro

@@ -3,6 +3,7 @@ import Button from '@/components/Button.astro'
 import Footer from '@/components/Footer.astro'
 import Header from '@/components/Header.astro'
 import Navbar from '@/components/Navbar.astro'
+import PhotoSwipe from '@/components/Widgets/PhotoSwipe.astro'
 import Scrollbar from '@/components/Widgets/Scrollbar.astro'
 import themeConfig from '@/config'
 import Head from '@/layouts/Head.astro'
@@ -48,5 +49,6 @@ const MarginBottom = isPost && themeConfig.comment?.enabled
     </div>
     <Scrollbar />
     <Button supportedLangs={supportedLangs} />
+    <PhotoSwipe />
   </body>
 </html>