apiserver/pkg/storage/cacher/lister_watcher: exposes WatchList semantics

[p0lyn0mial]

What type of PR is this?

/kind feature

What this PR does / why we need it:

xref: #134180

Which issue(s) this PR is related to:

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

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[p0lyn0mial]

/assign @wojtek-t

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: p0lyn0mial
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[k8s-ci-robot]

@p0lyn0mial: The following test 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-kubernetes-e2e-gce	9902ae7	link	true	/test pull-kubernetes-e2e-gce

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.

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