Unable to reconnect to GATT characteristics after disconnecting

[h2oboi89]

Want to be able to connect, disconnect, and then reconnect from BLE devices in a longer running process. Currently the code only calls BluetoothDevice.DisposeAllNativeObjects in a deconstructor I can't manually invoke.

Overall workflow:

1. Connect to Gatt
2. Connect to Service
3. Connect to characteristics
4. Do the BLE things
5. Dispose of entire stack
6. Reconnect if desired (start back at 1)

Was able to successfully implement my workflow by making BluetoothDevice implement IDisposable and have that call DisposeAllNativeObjects()

private void Dispose(bool disposing)
{
    if (!disposedValue)
    {
        if (disposing)
        {
            // TODO: dispose managed state (managed objects)
        }

        DisposeAllNativeObjects();
        disposedValue = true;
    }
}

~BluetoothDevice()
{
    Dispose(disposing: false);
}

public void Dispose()
{
    Dispose(disposing: true);
    GC.SuppressFinalize(this);
}

NOTE: implemented this in Platforms/Windows/BluetoothDevice.windows.cs

Now calling BluetoothDevice.Dispose() properly frees up resources and allows for follow on connects if needed.