Rename app to SIAB Scale and update test suite

lib/screens/home_screen.dart

@@ -25,7 +25,7 @@ class _HomeScreenState extends State<HomeScreen> {
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
-        title: const Text('Timbangan Bluetooh'),
+        title: const Text('SIAB Scale'),
         backgroundColor: Theme.of(context).colorScheme.inversePrimary,
         actions: [
           Consumer<BLEService>(