Add Biometrics settings inside private space One Lock settings

This includes below changes:
- Add Biometrics preferernce in Private Space One Lock settings page
- Face and Fingerprint enrolment for Private profile
- Feature is behind flag android.multiuser.enable_biometrics_to_unlock_private_space

Screenshots:
go/ss/9cWZRAuvGGW7gMm.png
go/ss/B3NoFbL3KbpSzeN.png
go/ss/7xH3DLi9d6Lu2mR.png
go/ss/8WBEgKychWpduXg.png
go/ss/8pmPGshd9aiPvVC.png
go/ss/AFPBPbiaBBvTj3p.png
go/ss/3fE4XKLLUdP8LmF.png

Bug: 308862923
Test: atest CombinedBiometricStatusUtilsTest, atest FaceFingerprintUnlockControllerTest
Change-Id: I1853107a4df4fc97db53c97524c6d44a4f554e37

src/com/android/settings/privatespace/onelock/PrivateSpaceFacePreferenceController.java

@@ -0,0 +1,65 @@
+/*
+ * 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.onelock;
+
+import android.content.Context;
+import android.os.UserHandle;
+import android.util.Log;
+
+import androidx.lifecycle.Lifecycle;
+
+import com.android.settings.biometrics.combination.BiometricFaceStatusPreferenceController;
+import com.android.settings.privatespace.PrivateSpaceMaintainer;
+
+public class PrivateSpaceFacePreferenceController extends BiometricFaceStatusPreferenceController {
+    private static final String TAG = "PrivateSpaceFaceCtrl";
+
+    public PrivateSpaceFacePreferenceController(Context context, String key) {
+        super(context, key);
+    }
+
+    public PrivateSpaceFacePreferenceController(Context context, String key, Lifecycle lifecycle) {
+        super(context, key, lifecycle);
+    }
+
+    @Override
+    protected boolean isUserSupported() {
+        return android.os.Flags.allowPrivateProfile()
+                && android.multiuser.Flags.enableBiometricsToUnlockPrivateSpace()
+                && getUserId() != UserHandle.USER_NULL;
+    }
+
+    @Override
+    protected int getUserId() {
+        UserHandle privateProfileHandle =
+                PrivateSpaceMaintainer.getInstance(mContext).getPrivateProfileHandle();
+        if (privateProfileHandle != null) {
+            return privateProfileHandle.getIdentifier();
+        } else {
+            Log.e(TAG, "Private profile user handle is not expected to be null.");
+        }
+        return UserHandle.USER_NULL;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return android.os.Flags.allowPrivateProfile()
+                        && android.multiuser.Flags.enableBiometricsToUnlockPrivateSpace()
+                ? AVAILABLE
+                : UNSUPPORTED_ON_DEVICE;
+    }
+}