Organize notification classes in row/stack

No functional changes. Reorganized logic under either row, stack,
logging, or row/wrapper. Haven't moved all classes over since there's
some classes that create conflicts due to weird use of
package-private/protected (primarily waiting for HUN and shelf classes).

Test: built, ran, used notifications
Bug: 110802404
Change-Id: Ia2152603bdbeb12c522360193511946c843b9266
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusIconContainer.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusIconContainer.java
index f8f6981..56a177e 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusIconContainer.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusIconContainer.java
@@ -33,9 +33,9 @@
 import com.android.keyguard.AlphaOptimizedLinearLayout;
 import com.android.systemui.R;
 import com.android.systemui.statusbar.StatusIconDisplayable;
-import com.android.systemui.statusbar.stack.AnimationFilter;
-import com.android.systemui.statusbar.stack.AnimationProperties;
-import com.android.systemui.statusbar.stack.ViewState;
+import com.android.systemui.statusbar.notification.stack.AnimationFilter;
+import com.android.systemui.statusbar.notification.stack.AnimationProperties;
+import com.android.systemui.statusbar.notification.stack.ViewState;
 import java.util.ArrayList;
 
 /**