Added Focus Outline To QS Tiles

Implemented new focus states for QS Tiles according to UI Specs:
go/qs-tiles-focus-state

Test: Manual, Tab to focus on qs tiles in shade -> ensure rectangular
outline consistent with UI specs in go/qs-tiles-focus-state
Flag: ACONFIG com.android.systemui.qs_tile_focus_state DISABLED
Fixes: 312899524

Change-Id: Ib090b7ab6f47931b1382f4bd8578c62c6f24c15b
diff --git a/packages/SystemUI/aconfig/systemui.aconfig b/packages/SystemUI/aconfig/systemui.aconfig
index d05d40d..da06830 100644
--- a/packages/SystemUI/aconfig/systemui.aconfig
+++ b/packages/SystemUI/aconfig/systemui.aconfig
@@ -610,3 +610,10 @@
     description: "Refactors media code to follow the recommended architecture"
     bug: "326408371"
 }
+
+flag {
+    name: "qs_tile_focus_state"
+    namespace: "systemui"
+    description: "enables new focus outline for qs tiles when focused on with physical keyboard"
+    bug: "312899524"
+}