WIP feat(server-side-apply/v1-alpha): Add plugin to scaffold APIs with Server-Side Apply

[camilamacedo86]

Adds optional server-side-apply plugin that scaffolds APIs with controllers using Server-Side Apply patterns. Plugin enables per-API choice between traditional Update and Server-Side Apply approaches.

How that works: See the doc added: https://deploy-preview-5458--kubebuilder.netlify.app/plugins/available/ssa-v1-alpha.html

Also, see that we are adding an sample : docs/book/src/getting-started-ssa/testdata/project

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: camilamacedo86

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• OWNERS [camilamacedo86]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[k8s-ci-robot]

@camilamacedo86: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-kubebuilder-e2e-k8s-1-34-0	25d38f6	link	true	/test pull-kubebuilder-e2e-k8s-1-34-0
pull-kubebuilder-e2e-k8s-1-33-0	25d38f6	link	true	/test pull-kubebuilder-e2e-k8s-1-33-0
pull-kubebuilder-e2e-k8s-1-35-0	8bfa6d7	link	true	/test pull-kubebuilder-e2e-k8s-1-35-0
pull-kubebuilder-test	10a43a3	link	true	/test pull-kubebuilder-test

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.