Add button to hide discovered devices in example app (#191)

* Add button to hide discovered devices in example app

* Resolve Ai Comments

* Apply suggestion from @fotiDim

* Add tooltip

---------

Co-authored-by: Foti Dim <foti@navideck.com>

example/lib/home/home.dart

@@ -21,6 +21,7 @@ class MyApp extends StatefulWidget {
 
 class _MyAppState extends State<MyApp> {
   final _bleDevices = <BleDevice>[];
+  final _hiddenDevices = <BleDevice>[];
   bool _isScanning = false;
   QueueType _queueType = QueueType.global;
   TextEditingController servicesFilterController = TextEditingController();
@@ -48,6 +49,11 @@ class _MyAppState extends State<MyApp> {
 
     UniversalBle.scanStream.listen((result) {
       // log(result.toString());
+      // If device is already in hidden devices, skip
+      if (_hiddenDevices.any((e) => e.deviceId == result.deviceId)) {
+        // debugPrint("Skipping hidden device: ${result.deviceId}");
+        return;
+      }
       int index = _bleDevices.indexWhere((e) => e.deviceId == result.deviceId);
       if (index == -1) {
         _bleDevices.add(result);
@@ -251,6 +257,30 @@ class _MyAppState extends State<MyApp> {
                   text: 'Scan Filters',
                   onPressed: _showScanFilterBottomSheet,
                 ),
+                if (_hiddenDevices.isNotEmpty)
+                  PlatformButton(
+                    text: 'Unhide ${_hiddenDevices.length} Devices',
+                    onPressed: () {
+                      setState(() {
+                        _hiddenDevices.clear();
+                      });
+                    },
+                  )
+                else if (_bleDevices.isNotEmpty)
+                  Tooltip(
+                    message:
+                        'Hide already discovered devices. When you turn on a new device, it will be easier to spot.',
+                    child: PlatformButton(
+                      text: 'Hide Already Discovered Devices',
+                      onPressed: () {
+                        setState(() {
+                          _hiddenDevices.clear();
+                          _hiddenDevices.addAll(_bleDevices);
+                          _bleDevices.clear();
+                        });
+                      },
+                    ),
+                  ),
                 if (_bleDevices.isNotEmpty)
                   PlatformButton(
                     text: 'Clear List',