feat: added support to process multiple gatewayclasses in translate.go

[Manoramsharma]

What type of PR is this?

feat: Added support to process multiple gatewayclasses in translate.go

What this PR does / why we need it:

This PR is an attempt to add support to egctl x translate command to process multiple gatewayClasses by modifying the kubernetesYAMLToResources function. This is just a supporting in the effort to add API webhook validation functions to egctl translate to catch client side validation errors and mimic the same experience the user.

Support this issue: #1295

Which issue(s) this PR fixes:

Fixes #3207

[github-actions[bot]]

This pull request has been automatically marked as stale because it has not had activity in the last 30 days. Please feel free to give a status update now, ping for review, when it's ready. Thank you for your contributions!

[arkodg]

closing this PR since its become inactive, feel free to reopen if you're still working on it