Add `use-credentials` to fetch manifest with cookies

I run code-server behind an authenticating Kubernetes Ingress which sets a cookie after a successful login is performed. Since this cookie is not set when fetching the manifest, the fetch fails and gets redirected to the authentication page, breaking code-server completely.

See https://developer.mozilla.org/en-US/docs/Web/HTML/Element/link

scripts/webpack.client.config.js

@@ -61,6 +61,7 @@ module.exports = (options = {}) => merge(
 			short_name: "Coder",
 			description: "Run VS Code on a remote server",
 			background_color: "#e5e5e5",
+			crossorigin: 'use-credentials',
 			icons: [{
 				src: path.join(root, "packages/web/assets/logo.png"),
 				sizes: [96, 128, 192, 256, 384],