Do Not Review: Add support for multiple gateways

[salonichf5]

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Proposed changes

Write a clear and concise description that helps reviewers understand the purpose and impact of your changes. Use the following format:

Problem: Users want to be able to configure multiple gateways

Solution: Allows users to configure multiple gateways

Testing:

1. Added unit tests and fixed functional tests

Manual testing:

Scenarios

Existing tutorials tested:

Closes #3219 Closes #3213

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• [x] I have read the CONTRIBUTING doc
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have checked that all unit tests pass after adding my changes
• [x] I have updated necessary documentation
• [x] I have rebased my branch onto main
• [x] I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

Release notes

If this PR introduces a change that affects users and needs to be mentioned in the release notes, please add a brief note that summarizes the change.

Add support for multiple gateways