Add isInMultiWindowMode bool to all logs.

Example output:
D/UserEvent: action:LONGPRESS
       Source child:WORKSPACE id=0
       Elapsed container 1850 ms session 1850 ms action 0 ms
       isInMultiWindowMode true

Bug: 34250955

Change-Id: If21484e8bbb0f4f311c2eb6e94b7dcea6d2431af
diff --git a/protos/launcher_log.proto b/protos/launcher_log.proto
index c42b142..17dec37 100644
--- a/protos/launcher_log.proto
+++ b/protos/launcher_log.proto
@@ -149,4 +149,6 @@
   optional int64 action_duration_millis = 4;
   optional int64 elapsed_container_millis = 5;
   optional int64 elapsed_session_millis = 6;
+
+  optional bool is_in_multi_window_mode = 7;
 }