Add CORS support and Docker configuration for web service

- Added CORS allowed origins in config.compose.yaml to enable cross-origin requests from the web service.
- Updated docker-compose.yml to include a new web service with build context and port mapping for local development.
- Enhanced gateway.go to support additional HTTP methods in CORS responses.
- Updated README.md to document the new web service and its configuration requirements.

web/svelte.config.js

@@ -0,0 +1,23 @@
+import adapter from '@sveltejs/adapter-static';
+import { relative, sep } from 'node:path';
+
+/** @type {import('@sveltejs/kit').Config} */
+const config = {
+	compilerOptions: {
+		// defaults to rune mode for the project, execept for `node_modules`. Can be removed in svelte 6.
+		runes: ({ filename }) => {
+			const relativePath = relative(import.meta.dirname, filename);
+			const pathSegments = relativePath.toLowerCase().split(sep);
+			const isExternalLibrary = pathSegments.includes('node_modules');
+
+			return isExternalLibrary ? undefined : true;
+		}
+	},
+	kit: {
+		adapter: adapter({
+			fallback: 'index.html'
+		})
+	}
+};
+
+export default config;