[k8sclusterreceiver] Allow enabling / disabling metrics

[povilasv]

Component(s)

receiver/k8scluster

Is your feature request related to a problem? Please describe.

We want to enable / disable metrics on k8sclusterreceiver.

Describe the solution you'd like

Similiar to hostmetricsreceiver we want to allow users to disable / enable metrics

Describe alternatives you've considered

No response

Additional context

No response

[github-actions]

Pinging code owners:

• k8sclusterreceiver: @dmitryax
• receiver/k8scluster: @dmitryax

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[dmitryax]

@povilasv, we need to consolidate all the metadata.yaml files in one file at the component root level. Also, we need to have one MetricsBuilder and one ResourceBuilder instances for the whole receiver. We should not follow the model from hostmetrics receiver because where they are separated between scrapers

[povilasv]

WIP in #24646