Add Lightweight Icing service API

src/com/google/android/gms/appdatasearch/UsageInfo.aidl

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+package com.google.android.gms.appdatasearch;
+
+parcelable UsageInfo;

src/com/google/android/gms/appdatasearch/UsageInfo.java

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+/*
+ * Copyright 2013-2015 µg Project Team
+ *
+ * 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.google.android.gms.appdatasearch;
+
+import org.microg.safeparcel.AutoSafeParcelable;
+
+public class UsageInfo extends AutoSafeParcelable {
+
+    public static Creator<UsageInfo> CREATOR = new AutoCreator<>(UsageInfo.class);
+}

src/com/google/android/gms/appdatasearch/internal/ILightweightAppDataSearch.aidl

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+package com.google.android.gms.appdatasearch.internal;
+
+import com.google.android.gms.appdatasearch.internal.ILightweightAppDataSearchCallbacks;
+import com.google.android.gms.appdatasearch.UsageInfo;
+
+interface ILightweightAppDataSearch {
+    void view(ILightweightAppDataSearchCallbacks callbacks, String packageName, in UsageInfo[] usageInfos);
+}

src/com/google/android/gms/appdatasearch/internal/ILightweightAppDataSearchCallbacks.aidl

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+package com.google.android.gms.appdatasearch.internal;
+
+interface ILightweightAppDataSearchCallbacks {
+}