Add screencapture feature to bugreporting

Dumpstate does not collect screenshots of the physical displays other
than the primary one. Add logic to collect these because it is important
for Automotive use case.
Further, Android bugreports does not include screenshot of the primary
display in the bugreport (its api allows capturing it seperately). The
API in automotive combines all displays in a zip file for automotive.
Bug: 133368541
Test: Manual
Change-Id: I412fb55e2d0bd734b264014857ad80e4ec04870e
diff --git a/car-bugreportd/car-bugreportd.rc b/car-bugreportd/car-bugreportd.rc
index 4c405e1..0935a60 100644
--- a/car-bugreportd/car-bugreportd.rc
+++ b/car-bugreportd/car-bugreportd.rc
@@ -1,6 +1,7 @@
 service car-bugreportd /system/bin/car-bugreportd
     socket car_br_progress_socket stream 0660 shell log
     socket car_br_output_socket stream 0660 shell log
+    socket car_br_extra_output_socket stream 0660 shell log
     class core
     user shell
     group log