Add barcode-detector-api-polyfill dependency and update environment variable declarations in SvelteKit project

.svelte-kit/adapter-node/internal 3.js

@@ -0,0 +1,14 @@
+import "./chunks/root.js";
+import { s, a, b } from "./chunks/environment.js";
+import { g, o, c, s as s2, a as a2, b as b2 } from "./chunks/internal.js";
+export {
+  g as get_hooks,
+  o as options,
+  s as set_assets,
+  a as set_building,
+  c as set_manifest,
+  b as set_prerendering,
+  s2 as set_private_env,
+  a2 as set_public_env,
+  b2 as set_read_implementation
+};