feat: add sbom test with reachability command proxy

[paulrosca-snyk]

Pull Request Submission Checklist

• Follows CONTRIBUTING guidelines
• Commit messages
  are release-note ready, emphasizing
  what was changed, not how.
• Includes detailed description of changes
• Contains risk assessment (Low | Medium | High)
• Highlights breaking API changes (if applicable)
• Links to automated tests covering new functionality
• Includes manual testing instructions (if necessary)
• Updates relevant GitBook documentation (PR link: ___)
• Includes product update to be announced in the next stable release notes

What does this PR do?

Updates the cli-extension-sbom and cli-extension-os-flows.

• Adds support for snyk sbom test --file="sbom.json" --reachability which will proxy to snyk test --sbom="sbom.json" --reachability
• Fixes bug in template rendering for snyk test --reachability

Where should the reviewer start?

How should this be manually tested?

snyk sbom test --file="sbom.json" --reachability --source-dir="/path/to/source/directory/"

should output the same result as

snyk test --sbom="sbom.jsom" --reachability" --source-dir="/path/to/source/directory/"

What's the product update that needs to be communicated to CLI users?

N/A. This should only be available to people that have the feature flag enabled.

Risk assessment (Low | Medium | High)?

Low - this is just adding a proxy to an existing command and the functionality is gated behind feature flags.

[snyk-io]

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