Add Private space Delete settings page inside PS settings page

Contains implementation of settings page for Delete private space
controller inside private space settings page.
- On selecting to delete private space displays list of account signed in
to private profile and deletes the private space after authentication.
- Shows a toast message after private space is deleted

- Adds dependency for setupdesgin loading layout to show a loading
  screen while deletion of private space is in progress.

Recording Link : b/318383729
go/ss/4Aq3rmbSGHMHesK.png

Bug: 318383729
Test: atest DeletePrivateSpaceControllerTest

Change-Id: Ia1730915e2469b47823c507f9ef6cd8f63c99baf

src/com/android/settings/privatespace/delete/DeletePrivateSpaceController.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.privatespace.delete;
+
+import android.content.Context;
+import android.content.Intent;
+
+import androidx.annotation.NonNull;
+import androidx.preference.Preference;
+
+import com.android.settings.core.BasePreferenceController;
+
+/** Controller to delete the private space from the PS Settings page */
+public class DeletePrivateSpaceController extends BasePreferenceController {
+    private static final String TAG = "PrivateSpaceDeleteCtrl";
+
+    public DeletePrivateSpaceController(@NonNull Context context, @NonNull String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return android.os.Flags.allowPrivateProfile() ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public boolean handlePreferenceTreeClick(@NonNull Preference preference) {
+        if (mPreferenceKey.equals(preference.getKey())) {
+            startPrivateSpaceDeleteActivity();
+            return true;
+        }
+        return false;
+    }
+
+    private void startPrivateSpaceDeleteActivity() {
+        final Intent intent = new Intent(mContext, PrivateSpaceDeleteActivity.class);
+        mContext.startActivity(intent);
+    }
+}