feat: display success/failed tuples import

[edwin-Marrima]

Description

Closes #259

• Enhance store import functionality testability
• Suppress store object display when store ID is provided in command

References

Review Checklist

• [ x] I have clicked on "allow edits by maintainers".
• I have added documentation for new/changed functionality in this PR or in a PR to openfga.dev [Provide a link to any relevant PRs in the references section above]
• [ x] The correct base branch is being used, if not main
• [ x] I have added tests to validate that the change in functionality is working as expected

[ewanharris]

Hey @edwin-Marrima, thanks for this PR and apologies for our delay in reviewing it.

I think before giving a 👍🏻 or 👎🏻 on this PR we'd like to take a further look at the way you've approached the testing as we currently tend to prefer mocking the FGA Client calls in tests (see an example here) and I'm not sure how the IODependency pattern you've introduced here would expand across the other commands.