Introduce library of helper plugins that can be used by in-tree and out of tree components

[hprateek43]

What would you like to be added:
In general, we might need a library of helper functions that both in-tree and out-of-tree plugins can use. We should finalise a location for this library and refactor common code components there.

Why is this needed:
Currently the homegrown .import-restrictions tool requires explicit listing for all transitive dependencies, even internal ones. However, the golang compiler does not allow the import of internal libraries anyway. This leads to a challenge is cleanups of components like scheduler as controller has transitive dependencies around the errchannels. This could have been circumvented if such code was placed in a common library that can be used by multiple components.

Reference PRs that were affected by this:
#85773
#84336

[hprateek43]

@alculquicondor @ahg-g Added for reference around our discussion

[hprateek43]

/sig scheduling

[tanjunchen]

/cc

[alculquicondor]

Thanks @hprateek43 for opening this. We will probably need to progress a bit more with #85822 before being able to suggest a solution to this.

[fejta-bot]

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[fejta-bot]

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[alculquicondor]

/close

[k8s-ci-robot]

@alculquicondor: Closing this issue.

In response to this:

/close

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