Add Debug page and fix BLE communication issues

Major changes:
- Added Debug tab with real-time message logging and hex viewer
- Implemented timed data logging ($UMTDL command) per API v1.3
- Fixed BLE message parsing to handle notifications without line endings
- Added Schema 2 support (22-field timed logging packets)
- Updated Maglink BLE UUIDs (fff0/fff1/fff2)
- Added connection timeout (10s) to prevent hanging on unavailable devices
- Added connection status display and manual push-button logging trigger
- Improved retry logging with attempt numbers and delays
- Added console window allocation for Windows debug output
- Added BLE disconnect on app close

Bug fixes:
- Fixed device name filtering for Maglink (ML-* prefix)
- Fixed RtkGps enum reference in DeviceScanViewModel
- Fixed DebugMessage namespace (moved to Models)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

FieldLogger/ViewModels/DeviceScanViewModel.cs

@@ -88,7 +88,7 @@ public sealed partial class DeviceScanViewModel : ObservableObject
         // Filter by device name prefix based on device type.
         if (Kind == DeviceKind.Locator && !UmReceiverService.IsUmReceiverName(device.Name))
             return;
-        if (Kind == DeviceKind.Maglink && !MaglinkService.IsMaglinkName(device.Name))
+        if (Kind == DeviceKind.RtkGps && !MaglinkService.IsMaglinkName(device.Name))
             return;
 
         MainThread.BeginInvokeOnMainThread(() =>