Add arch to rhel fetch

[mostlikelee]

If this Pull Request is work in progress, Add a prefix of “[WIP]” in the title.

What did you implement:

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context.

Fixes # (issue)

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.

• goval-dictionary fetch redhat 9
• spot checked sqlite ensuring multiple rows with unique arch values

Checklist:

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• Write tests
• Write documentation
• Check that there aren't other open pull requests for the same issue/feature
• Format your source code by make fmt
• Pass the test by make test
• Provide verification config / commands
• Enable "Allow edits from maintainers" for this PR
• Update the messages below

Is this ready for review?: YES

Reference

• https://blog.github.com/2015-01-21-how-to-write-the-perfect-pull-request/

[mostlikelee]

@MaineK00n any thoughts on this PR?

[Copilot]

Pull request overview

Adds architecture awareness to Red Hat OVAL parsing so affected packages are emitted/stored per-architecture (instead of collapsing across arches).

Changes:

• Introduce an archResolver to map rpminfo_test → rpminfo_state → arch text and emit packages per arch.
• Update Red Hat package collection to de-duplicate/version-select per (name, arch) key.
• Extend unit tests to cover multi-arch expansion and update comparisons.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
models/redhat/redhat.go	Adds arch resolution and emits models.Package entries per architecture; de-dupes by (name, arch) during collection.
models/redhat/redhat_test.go	Updates tests for new collectRedHatPacks signature and adds multi-arch test cases.

Comments suppressed due to low confidence (1)

models/redhat/redhat_test.go:350

• The sorting comparator ignores Arch (and Version), so packages that differ only by Arch can end up in non-deterministic order (since collectRedHatPacks builds results from a map). This can make slices.Equal comparisons flaky. Include Arch (and any other differentiating fields, e.g. Version/NotFixedYet) in the sort key for both actual and tt.expected.

		sort.Slice(actual, func(i, j int) bool {
			if actual[i].Name == actual[j].Name {
				return actual[i].ModularityLabel < actual[j].ModularityLabel
			}
			return actual[i].Name < actual[j].Name
		})

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[MaineK00n]

@MaineK00n any thoughts on this PR?

I'm very busy at the moment, so I won't be able to see it right away.

I would like you to fill out the body of the PR and format the commit message by referring to other commits.
I think it's good to be able to take architecture.

[MaineK00n]

The "How Has This Been Tested?" section is insufficient. Please show that the appropriate arch is included, even if it is just the sqlite3 pattern.