[Granular resource limits] Cache node resources

[norbertcyran]

What type of PR is this?

/kind feature

What this PR does / why we need it:

This PR adds caching layer for node resources to avoid calculating custom resources for every node in the cluster. Cache uses node group ID as a key, so all nodes within the node group will yield the same resources (which is expected).

Which issue(s) this PR fixes:

Part of #8703

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]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

Hi @norbertcyran. Thanks for your PR.

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