chore: added new graph object for nim runtimes

[TomerFi]

Description

Added new graph objects for NIM models.

Work doc
Jira: NVPE-51

Frontend PR: opendatahub-io/odh-dashboard#3612

How Has This Been Tested?

A custom image was deployed into our dev cluster. After deploying a NIM model to the cluster, I checked the relevant x-metrics-dashboard configmap for the graph objects. I proceeded to execute the instantiated queries against the model after loading it with invocations to provide data. See doc for more details.

Merge criteria:

• The commits are squashed in a cohesive manner and have meaningful messages.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[openshift-ci]

Hi @TomerFi. Thanks for your PR.

I'm waiting for a opendatahub-io 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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[VedantMahabaleshwarkar]

/ok-to-test

[spolti]

@israel-hdez do you want to take a look before we merge it?

[israel-hdez]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: israel-hdez, spolti, TomerFi

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[israel-hdez]

/lgtm