feat: support csv in fga tuple delete

[bensooraj]

Description

• fga tuple delete --file=(*.json|*.yaml|*csv)
• The tuple delete command now supports reading values of a *.csv file as well

References

• This PR is a copy of feat: support csv in tuple delete
• Documentation: doc: fga tuple delete --file=(csv|json|yaml) now supports CSV
• Relevant issues:
  1. [Feature] Support csv in tuple delete #477
  2. tuple delete should support CSV files #256

Review Checklist

• 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]
• The correct base branch is being used, if not main
• I have added tests to validate that the change in functionality is working as expected

[Siddhant-K-code]

👋🏻 @bensooraj, I saw you ticked I have added documentation for new/changed functionality in this PR or in a PR to [openfga.dev](https://github.com/openfga/openfga.dev) [Provide a link to any relevant PRs in the references section above]"

Could you link the docs PR too? As, it would be super helpful if we can have docs change too along with the product side change. Let me know, if you need any help with that.

For context: We have our docs here

[Siddhant-K-code]

Great PR! The changes improve code organization and add solid test coverage. A few minor suggestions for future improvements (suggested below)

These are minor suggestions - the PR is solid and ready to merge as is. Thanks for the improvements!

[bensooraj]

👋🏻 @bensooraj, I saw you ticked I have added documentation for new/changed functionality in this PR or in a PR to [openfga.dev](https://github.com/openfga/openfga.dev) [Provide a link to any relevant PRs in the references section above]"

Could you link the docs PR too? As, it would be super helpful if we can have docs change too along with the product side change. Let me know, if you need any help with that.

For context: We have our docs here

I have added documentation at openfga.dev#1004

[Siddhant-K-code]

@bensooraj can you please fix the lint errs

[bensooraj]

@bensooraj can you please fix the lint errs

I thought I did, my bad. I have fixed those as well.

[Siddhant-K-code]

Changes looks good to me.

Will also someone from @openfga/dx team for a final review & then we can merge

[dyeam0]

@bensooraj Thanks for the contribution and, @Siddhant-K-code, thanks for the review!

We will assign someone in our planning meeting this week to pick this one up for a final review.