Creates common logging functions at different levels. Allows for providing
logging statements which are actually printed to the console based on the
LOG_LEVEL environment variable.
PR Close#37192
Integrates the merge script into the `ng-dev` CLI. The goal is that
caretakers can run the same command across repositories to merge a pull
request. The command is as followed: `yarn ng-dev pr merge <number>`.
PR Close#37138