Move the app to /system_ext

As mentioned in go/partitions-in-r, we plan to forbid hidden API in
product partition.
So this app should be moved to /system_ext because it uses hidden API.
It is not permanent, so they can be moved back to /product due to
needs if there isn't hidden usage anymore.

Bug: 137908189
Test: m
Test: check whether device boots successfully
Change-Id: Ida940a2e1bb832cf5c3d147297e7ed65fa6921d5
diff --git a/CleanSpec.mk b/CleanSpec.mk
index b2c5266..f7bda94 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -53,6 +53,16 @@
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/Launcher2_intermediates)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app/Launcher2.apk)
 
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/product/priv-app/Launcher3)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/product/priv-app/Launcher3Go)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/product/priv-app/Launcher3QuickStep)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/product/priv-app/Launcher3QuickStepGo)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/product/priv-app/Launcher3GoIconRecents)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/product/priv-app/Launcher3)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/product/priv-app/Launcher3Go)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/product/priv-app/Launcher3QuickStep)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/product/priv-app/Launcher3QuickStepGo)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/product/priv-app/Launcher3GoIconRecents)
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************