feat: add darktable web API interface with gallery, image detail, and settings screens

- Implemented main entry point for React application in `main.jsx`.
- Created `Gallery` component for displaying images with infinite scroll and pull-to-refresh functionality.
- Developed `ImageDetail` component for showing detailed information and actions for selected images.
- Added `Settings` component for configuring API connection settings.
- Integrated Vite for build and development with PWA support.
- Implemented caching strategies for API responses and image previews using Workbox.

contrib/darktable-api/web/index.html

@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/icon.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover" />
+    <meta name="theme-color" content="#0d0d0d" />
+    <meta name="description" content="darktable REST API web interface" />
+    <meta name="apple-mobile-web-app-capable" content="yes" />
+    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
+    <meta name="apple-mobile-web-app-title" content="darktable" />
+    <link rel="apple-touch-icon" href="/icon.svg" />
+    <title>darktable Gallery</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.jsx"></script>
+  </body>
+</html>