Notif redesign: Update footer view layout

This CL updates the layout of the footer view (behind a flag) to match
the new specs. The new buttons don't do anything yet, but the clear all
button still works.

Bug: 375010573
Test: manually verify that the new design looks good and changes when
the theme changes
Flag: com.android.systemui.notifications_redesign_footer_view

Change-Id: Ib83cd37a1f5c2da80033f6f89ed8a52947c12a6b
diff --git a/packages/SystemUI/aconfig/systemui.aconfig b/packages/SystemUI/aconfig/systemui.aconfig
index 2278789..9905cef 100644
--- a/packages/SystemUI/aconfig/systemui.aconfig
+++ b/packages/SystemUI/aconfig/systemui.aconfig
@@ -33,6 +33,13 @@
 }
 
 flag {
+  name: "notifications_redesign_footer_view"
+  namespace: "systemui"
+  description: "Notifications Redesign: Update the look of the notifications footer."
+  bug: "375010573"
+}
+
+flag {
    name: "notification_row_content_binder_refactor"
    namespace: "systemui"
    description: "Convert the NotificationContentInflater to Kotlin and restructure it to support modern views"