feature: add comment param to FindOptions.

[nathanjordan]

Description of change

Allows users to pass in comments for queries issued through the entity manager
like they are for the query builder (added in #6892).

Pull-Request Checklist

• Code is up-to-date with the master branch
• npm run lint passes with this change
• npm run test passes with this change
• This pull request links relevant issues as Fixes #0000
• There are new or updated unit tests validating the change
• Documentation has been updated to reflect this change
• The new commits follow conventions explained in CONTRIBUTING.md

[nathanjordan]

looking at other PRs it seems they also have failing builds for the same reason w/ the connection with such name already exist errors

[pleerock]

Thank you for contribution! 🎉