VOL-4925 - Build and release components.

Misc
----
  o Bulk update copyright notice to 2023.

Makefile
makefiles/*
-----------
  o Replace rm -rf with make builtin $(RM) -r
  o Move help target into makefiles/help.

go.mod
go.sum
------
  o Update opencord dependencies to the latest released versions.

Change-Id: I56eba94ddf878b318277b9e46a98053fae36ffcf
diff --git a/makefiles/todo.mk b/makefiles/todo.mk
index ac9231e..ad116c2 100644
--- a/makefiles/todo.mk
+++ b/makefiles/todo.mk
@@ -34,6 +34,7 @@
 	@echo "  o Review handling of targets clean and distclean:"
 	@echo "    - clean removes generated targets"
 	@echo "    - distclean/sterile should revert to a pristine checkout state"
+	@echo "  o move target sca, paths and cleanup into a named library makefile."
 
 $(if $(DEBUG),$(warning LEAVE))