feat: add --quiet option to migration:show command (Fixes #7349)

[Juddling]

Description of change

Currently typeorm migration:show prints out a list of migrations, and returns an error exit code if there are any unapplied migrations.

The error code is useful in CI contexts, to assert that all migrations have been applied, perhaps before a code deploy.

Issue #7349 points out that this error code is noisy/annoying for local development. This PR introduces a --quiet flag to supress that exit code.

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

[akaNightmare]

const silenceError = args.quiet !== undefined

[Juddling]

Could someone trigger the CI checks for this branch please? I can't see how to trigger in the docs.

[pleerock]

After reading the context, I have to agree that migration:show doesn't have to throw error exit code at all. I understand that there might be a specific use cases, however they shouldn't be a migration:show responsibility for sure. So, I have to agree it was a mistake to merge a previous PR.

I suggest to revert previous behavior (make quite mode by default) and add a separate command for this particular use case. Now sure how to name it, maybe something like migration:status, or suggest your better alternatives.

[pleerock]

Okay since there is no answer from author, I reverted status code back to 0. Regarding to adding migration:status feel free to create a separate PR for that feature.