android: Convert DirectoryStateReceiver to Kotlin

src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/DirectoryStateReceiver.java

@@ -1,22 +0,0 @@
-package org.yuzu.yuzu_emu.utils;
-
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.Intent;
-
-import org.yuzu.yuzu_emu.utils.DirectoryInitialization.DirectoryInitializationState;
-
-public class DirectoryStateReceiver extends BroadcastReceiver {
-    Action1<DirectoryInitializationState> callback;
-
-    public DirectoryStateReceiver(Action1<DirectoryInitializationState> callback) {
-        this.callback = callback;
-    }
-
-    @Override
-    public void onReceive(Context context, Intent intent) {
-        DirectoryInitializationState state = (DirectoryInitializationState) intent
-                .getSerializableExtra(DirectoryInitialization.EXTRA_STATE);
-        callback.call(state);
-    }
-}

src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/DirectoryStateReceiver.kt

@@ -0,0 +1,15 @@
+package org.yuzu.yuzu_emu.utils
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import org.yuzu.yuzu_emu.utils.DirectoryInitialization.DirectoryInitializationState
+
+class DirectoryStateReceiver(var callback: (DirectoryInitializationState) -> Unit) :
+    BroadcastReceiver() {
+    override fun onReceive(context: Context, intent: Intent) {
+        val state = intent
+            .getSerializableExtra(DirectoryInitialization.EXTRA_STATE) as DirectoryInitializationState
+        callback.invoke(state)
+    }
+}