Implement functions to fetch results from pod annotations

[sanposhiho]

To use this simulator as a library, we needed to fetch scheduling results from pod annotations.
In annotation, the results are stored as json, so the functions should unmarshal the json in the pod annotation and return the result as some useful type.

/kind feature

[markstur]

/assign @markstur

[k8s-triage-robot]

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/lifecycle stale

[markstur]

/remove-lifecycle stale

[sanposhiho]

/area simulator
/priority important-longterm

[sanposhiho]

/triage accepted

[k8s-triage-robot]

The Kubernetes project currently lacks enough contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Mark this issue or PR as fresh with /remove-lifecycle stale
• Mark this issue or PR as rotten with /lifecycle rotten
• Close this issue or PR with /close
• Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/lifecycle stale