android: Convert HeaderSetting to Kotlin

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/HeaderSetting.java

@@ -1,14 +0,0 @@
-package org.yuzu.yuzu_emu.features.settings.model.view;
-
-import org.yuzu.yuzu_emu.features.settings.model.Setting;
-
-public final class HeaderSetting extends SettingsItem {
-    public HeaderSetting(String key, Setting setting, int titleId, int descriptionId) {
-        super(key, null, setting, titleId, descriptionId);
-    }
-
-    @Override
-    public int getType() {
-        return SettingsItem.TYPE_HEADER;
-    }
-}

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/HeaderSetting.kt

@@ -0,0 +1,12 @@
+package org.yuzu.yuzu_emu.features.settings.model.view
+
+import org.yuzu.yuzu_emu.features.settings.model.Setting
+
+class HeaderSetting(
+    key: String?,
+    setting: Setting?,
+    titleId: Int,
+    descriptionId: Int?
+) : SettingsItem(key, null, setting, titleId, descriptionId) {
+    override val type = TYPE_HEADER
+}