Add an option in kustomize lib to suppress the deprecation warnings

[davidbaena]

The goal of this PR is to add and Logger option to suppress warnings if user integrates kustomize in his project. But the kustomize binary still printing warnings by default.

Implementation I injected a slog.Logger in KustTarget this way the lib user might pass a custom logger.

In order to configure this logger, I extended de Options to add a new field called LogLevel which is filled by default as Info (just to be compatible with the current binary version)

Fixes: https://github.com/kubernetes-sigs/kustomize/issues/5452

./go/bin/kustomize build kustomization-foo
{"time":"2023-11-29T21:26:25.85695+01:00","level":"WARN","msg":"# Warning: 'bases' is deprecated. Please use 'resources' instead. Run 'kustomize edit fix' to update your Kustomization automatically."}
...

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[k8s-ci-robot]

Hi @davidbaena. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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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[davidbaena]

Hello @natasha41575 could you help me with the review process?

[natasha41575]

/ok-to-test

[davidbaena]

/retest

[davidbaena]

/retest-required

[davidbaena]

/test all

[davidbaena]

/test MacOS

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@davidbaena: The specified target(s) for /test were not found. The following commands are available to trigger required jobs:

• /test kustomize-presubmit-master

Use /test all to run all jobs.

In response to this:

/test MacOS

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[davidbaena]

Hello @yuwenma, @annasong20, do you mind to review this PR 🙏 If you need some extra description do not hesitate to ask me 💪

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/lifecycle stale

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PR needs rebase.

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/lifecycle rotten