[Helm] Choose NodePort values for controller.service.type = LoadBalancer

[Falltrades]

Proposed changes

Closes related issue: https://github.com/nginxinc/kubernetes-ingress/issues/5333

This changes enable the possibility to choose custom NodePort port values when for controller.service.type = LoadBalancer.

Checklist

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• [x] I have read the CONTRIBUTING doc
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have checked that all unit tests pass after adding my changes
• [x] I have updated necessary documentation
• [x] I have rebased my branch onto main
• [x] I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

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[vepatel]

Hey @Falltrades this PR will be merged hopefully today but just a suggestion on branching please create a branch in the forked repo instead of using main for development for future contributions.

thanks again for the PR and apologies for the delay