Add task stack to ASM atom

As we are not rolling ASM out in U, we want to collect better data from
droidfooders to debug how enforcement would impact apps

Bug: 269253404
Test: Manually checked logs
Change-Id: I0c8facb90341e8ac5ba5c3ea4390b0daaa767587
diff --git a/stats/atoms.proto b/stats/atoms.proto
index d5e33d8..6b06f1c 100644
--- a/stats/atoms.proto
+++ b/stats/atoms.proto
@@ -1432,6 +1432,7 @@
     optional int32 version = 11;
     optional bool multi_window = 12;
     optional int32 bal_code = 13;
+    optional string task_debug_info = 14;
 }
 
 /**