[CT-1890] Reintroduce logging to manifest generation

[stu-k]

As part of the work in #6565, event logging in the parse task was removed. This ticket captures the work to reintroduce it to ManifestLoader.get_full_manifest, likely behind an optional flag. I believe the best method to achieve this is to pass in the fire_event function to the method, defaulting to a noop function.

[gshank]

We also have a "fire_event_if" function in core/dbt/events/functions.py

[github-actions]

This issue has been marked as Stale because it has been open for 180 days with no activity. If you would like the issue to remain open, please comment on the issue or else it will be closed in 7 days.

[github-actions]

Although we are closing this issue as stale, it's not gone forever. Issues can be reopened if there is renewed community interest. Just add a comment to notify the maintainers.