Android: Convert Control to Kotlin

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/model/controlleremu/Control.kt

@@ -1,8 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-package org.dolphinemu.dolphinemu.features.input.model.controlleremu;
+package org.dolphinemu.dolphinemu.features.input.model.controlleremu
 
-import androidx.annotation.Keep;
+import androidx.annotation.Keep
 
 /**
  * Represents a C++ ControllerEmu::Control.
@@ -10,18 +10,9 @@ import androidx.annotation.Keep;
  * The lifetime of this class is managed by C++ code. Calling methods on it after it's destroyed
  * in C++ is undefined behavior!
  */
-public class Control
-{
-  @Keep
-  private final long mPointer;
+@Keep
+class Control private constructor(private val pointer: Long) {
+    external fun getUiName(): String
 
-  @Keep
-  private Control(long pointer)
-  {
-    mPointer = pointer;
-  }
-
-  public native String getUiName();
-
-  public native ControlReference getControlReference();
+    external fun getControlReference(): ControlReference
 }