chore: Add Kustomization.yaml for crds

[kelvin-acosta]

Description of changes:

Currently, the generated helm charts have a crds/ directory which installs CRDs the first time the helm chart is installed. The problem with the CRDs directory is that it is not managed further in the helm lifecycle, for example with upgrade commands. This creates an alternative way to install the crds using kustomize.

I had first opened a PR in aws-controllers-k8s/eks-controller#191 but was redirected to open a PR in this repo instead.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[ack-prow]

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This pull-request has been approved by: kelvin-acosta
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[ack-prow]

Hi @kelvin-acosta. Thanks for your PR.

I'm waiting for a aws-controllers-k8s 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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