Adding setup and helper scripts for k8s gwapi conformance test running

[O-sura]

Purpose

This PR introduces the changes required for setting up a local kind cluster with metal LB and run conformance tests and generating conformance report

• Fix for: [Task]: Kubernetes Gateway API Conformance for APIP K8s Operator #2103

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Dependency Validation Results

Dependency name: sigs.k8s.io/gateway-api/conformance
Version: v1.5.1
Approved: ❌ No - Module not found in dependency registry

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Next Steps

1. Review the validation failures listed above
2. Check if dependencies are in the approved dependency list
3. Options to resolve:
   • Remove the unapproved dependencies from this PR
   • OR submit a PR to add these dependencies to the approved list in engineering-governance
4. Once resolved, push changes to re-run validation

This PR is blocked until all dependencies are approved.

⚠️ Please verify the scope of the dependencies usage is necessary