Merge branch '1712-detect-dead-bluetooth-connections' into 'master'

...ject/bramble/plugin/bluetooth/AndroidBluetoothPlugin.java

...amble/plugin/bluetooth/AndroidBluetoothPluginFactory.java

...plugin/bluetooth/AndroidBluetoothTransportConnection.java

.../java/org/briarproject/bramble/api/io/TimeoutMonitor.java

...main/java/org/briarproject/bramble/BrambleCoreModule.java

...e/src/main/java/org/briarproject/bramble/io/IoModule.java

.../java/org/briarproject/bramble/io/TimeoutInputStream.java

.../java/org/briarproject/bramble/io/TimeoutMonitorImpl.java

...riarproject/bramble/plugin/bluetooth/BluetoothPlugin.java

...a/org/briarproject/bramble/io/TimeoutInputStreamTest.java

.../org/briarproject/bramble/plugin/DesktopPluginModule.java

...project/bramble/plugin/bluetooth/JavaBluetoothPlugin.java

.../bramble/plugin/bluetooth/JavaBluetoothPluginFactory.java

...le/plugin/bluetooth/JavaBluetoothTransportConnection.java

...c/main/java/org/briarproject/briar/android/AppModule.java