Add a duplicatedTargetProductName linter

[rsarv3006]

Resolves #6118

Short description 📝

Add a duplicated target product name linter. Also checks for destinations as well. Thanks @kwridan for pointing that out.

How to test the changes locally 🧐

Include a set of steps for the reviewer to test the changes locally (see the documentation for reference).

Contributor checklist ✅

• The code has been linted using run mise run lint:fix
• The change is tested via unit testing or acceptance testing, or both
• The title of the PR is formulated in a way that is usable as a changelog entry
• In case the PR introduces changes that affect users, the documentation has been updated

Reviewer checklist ✅

• The code architecture and patterns are consistent with the rest of the codebase
• Reviewer has checked that, if needed, the PR includes the label changelog:added, changelog:fixed, or changelog:changed, and the title is usable as a changelog entry

[fortmarek]

I don't think we should check destinations. As per @kwridan's comment here, it's fine to have duplicate product names as long as they don't end up being linked to the same target. Sure, supporting multiple destinations was one of the use cases for this, but there might be different valid scenarios that we'd want to allow.

Ideally, we should check for all rootTargets whether any of their transitive dependencies has a duplicate product name.

[rsarv3006]

Thanks for the clarification! I will update and push when I have a chance.