Display resources for .yml files

[r-yabyab]

Fixes #355

Display resources from .yml files and add null check to allow comment blocks in yaml files-- Example in the first resource block in multus-daemonset-thick.yml from nephio-example-packages which previously caused a runtime error if you tried to view its resources.

[nephio-prow]

Hi @r-yabyab. Thanks for your PR.

I'm waiting for a nephio-project member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[efiacor]

/approve
/lgtm

[nephio-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: efiacor, r-yabyab

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