Add a secondary launcher activity (1/2)

This secondary launcher activity with new category SECONDARY_HOME and
multiple instance supporrted could be used on sencondary display.

Bug: 118206886
Bug: 114329798
Test: Manual
Change-Id: Ibaecf8ef7614389760d0fcc547ef6d378a921583
diff --git a/Android.mk b/Android.mk
index e5a712f..28f0bc2 100644
--- a/Android.mk
+++ b/Android.mk
@@ -108,7 +108,9 @@
 LOCAL_USE_AAPT2 := true
 LOCAL_MODULE_TAGS := optional
 
-LOCAL_STATIC_ANDROID_LIBRARIES := Launcher3CommonDepsLib
+LOCAL_STATIC_ANDROID_LIBRARIES := \
+    Launcher3CommonDepsLib \
+    SecondaryDisplayLauncherLib
 LOCAL_SRC_FILES := \
     $(call all-java-files-under, src) \
     $(call all-java-files-under, src_shortcuts_overrides) \