Adds "disableTaxRefund" option

[lucasayb]

What problem is this solving?

Adds an option in the admin panel so that the tax is not refunded together with the value of the purchase.

How to test it?

1. Access the workspace
2. Go to General options
3. Mark Disable Tax Refund option
4. Try to do a refund and check if the tax was refunded together with the value of the purchase

Workspace

Screenshots or example usage:

[vtex-io-ci-cd]

Hi! I'm VTEX IO CI/CD Bot and I'll be helping you to publish your app! 🤖

Please select which version do you want to release:

• Patch (backwards-compatible bug fixes)

• Minor (backwards-compatible functionality)

• Major (incompatible API changes)

And then you just need to merge your PR when you are ready! There is no need to create a release commit/tag.

• No thanks, I would rather do it manually 😞

[vtex-io-docs-bot]

Beep boop 🤖

I noticed you didn't make any changes at the docs/ folder

• There's nothing new to document 🤔
• I'll do it later 😞

In order to keep track, I'll create an issue if you decide now is not a good time

• I just updated 🎉🎉