[VOL-5246] - branch and release bbsim

VERSION
api/bbsim/bbsim.proto
api/bbsim/bbsim_dmi.proto
api/legacy/bbsim.proto
cmd/bbr/bbr.go
cmd/bbsim/bbsim.go
cmd/bbsimctl/bbsimctl.go
configs/bbsim.yaml
tests/bbr.groovy
tests/bbr.sh
tools/main.go
------------------------
  o Copyright message update
  o Append # [EOF]

cmd/bbr/bbr.go
cmd/bbsimctl/bbsimctl.go
tools/main.go
------------------------
  o Run gofmt -s -e -w on sources to fix linting complaints.

Change-Id: I666f97b35ccfc012c02a54c0f99677be290a40d0
diff --git a/configs/bbsim.yaml b/configs/bbsim.yaml
index 1c55084..ff13b9a 100644
--- a/configs/bbsim.yaml
+++ b/configs/bbsim.yaml
@@ -1,3 +1,5 @@
+# Copyright 2019-2023 Open Networking Foundation (ONF) and the ONF Contributors
+
 ---
 # CLI arguments override values specified here.
 # Commented values show defaults.