Android: Add the advanced input mapping dialog

It's missing a lot of features from the PC version for now, like
buttons for inserting functions and the ability to see what the
expression evaluates to. I mostly just wanted to get something in
place so you can set up rumble.

Co-authored-by: Charles Lombardo <clombardo169@gmail.com>

Source/Android/jni/Input/CoreDevice.h

@@ -0,0 +1,15 @@
+// Copyright 2022 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <memory>
+
+#include <jni.h>
+
+namespace ciface::Core
+{
+class Device;
+}
+
+jobject CoreDeviceToJava(JNIEnv* env, std::shared_ptr<ciface::Core::Device> device);