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

node_modules/@zxing/library/es2015/browser/BrowserAztecCodeReader.js

@@ -0,0 +1,19 @@
+import { BrowserCodeReader } from './BrowserCodeReader';
+import AztecReader from '../core/aztec/AztecReader';
+/**
+ * Aztec Code reader to use from browser.
+ *
+ * @class BrowserAztecCodeReader
+ * @extends {BrowserCodeReader}
+ */
+export class BrowserAztecCodeReader extends BrowserCodeReader {
+    /**
+     * Creates an instance of BrowserAztecCodeReader.
+     * @param {number} [timeBetweenScansMillis=500] the time delay between subsequent decode tries
+     *
+     * @memberOf BrowserAztecCodeReader
+     */
+    constructor(timeBetweenScansMillis = 500) {
+        super(new AztecReader(), timeBetweenScansMillis);
+    }
+}