fix: resolve QRCode library syntax errors and improve reliability

- Remove problematic local qrcode.min.js with syntax errors
- Use CDN version of qrcode library for better compatibility
- Add .eslintignore to exclude minified libraries from linting
- Improve error handling and fallback mechanisms
- Fix SyntaxError: Unexpected token 'var' issue

Author: mrvi0

utilities/stream-qr/display.html

@@ -176,7 +176,7 @@
         }
     </script>
 
-    <script src="./js/qrcode.min.js" onerror="loadQRCodeFallback()"></script>
+    <script src="https://cdn.jsdelivr.net/npm/[email protected]/build/qrcode.min.js" onerror="loadQRCodeFallback()"></script>
     <link rel="stylesheet" href="../stream-popup/css/main.css">
     <link rel="stylesheet" href="./css/main.css">
 </head>