Start drawing QS slashes rather than using AVDS

These need a bit more work like length control and animations, etc.
but this is a decent start.

Test: visual
Change-Id: I750d777b2b4a19f8c586066712f5a3f7e79befd6
diff --git a/packages/SystemUI/res/values/ids.xml b/packages/SystemUI/res/values/ids.xml
index fc0c82c..3c6ad23 100644
--- a/packages/SystemUI/res/values/ids.xml
+++ b/packages/SystemUI/res/values/ids.xml
@@ -45,6 +45,7 @@
     <item type="id" name="shadow_alpha_animator_start_value_tag"/>
     <item type="id" name="doze_saved_filter_tag"/>
     <item type="id" name="qs_icon_tag"/>
+    <item type="id" name="qs_slash_tag"/>
     <item type="id" name="scrim"/>
     <item type="id" name="scrim_target"/>
     <item type="id" name="scrim_alpha_start"/>