Add icon packs for the 3 icon sets.

Start with only wifi signal icons.

Bug: 118757293
Test: adb shell cmd overlay enable-exclusive --user 0 com.android.theme.icon_pack.{circular,filled,rounded}
Change-Id: I5b39552a059dc42d6c6c4b31db1a86d31275ece1
diff --git a/packages/overlays/IconPackCircularOverlay/AndroidManifest.xml b/packages/overlays/IconPackCircularOverlay/AndroidManifest.xml
new file mode 100644
index 0000000..6f0124d
--- /dev/null
+++ b/packages/overlays/IconPackCircularOverlay/AndroidManifest.xml
@@ -0,0 +1,24 @@
+<!--
+/**
+ * Copyright (c) 2019, 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.
+ */
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.theme.icon_pack.circular"
+    android:versionCode="1"
+    android:versionName="1.0">
+    <overlay android:targetPackage="android" android:category="android.theme.customization.icon_pack" android:priority="1"/>
+    <application android:label="Circular" android:hasCode="false"/>
+</manifest>