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

node_modules/@zxing/browser/es2015/readers/BrowserMultiFormatOneDReader.d.ts

@@ -0,0 +1,14 @@
+import { DecodeHintType } from '@zxing/library';
+import { BrowserCodeReader } from './BrowserCodeReader';
+import { IBrowserCodeReaderOptions } from './IBrowserCodeReaderOptions';
+/**
+ * Reader to be used for any One Dimension type barcode.
+ */
+export declare class BrowserMultiFormatOneDReader extends BrowserCodeReader {
+    /**
+     * Creates an instance of BrowserBarcodeReader.
+     * @param {Map<DecodeHintType, any>} hints?
+     * @param options
+     */
+    constructor(hints?: Map<DecodeHintType, any>, options?: IBrowserCodeReaderOptions);
+}