Kubebuilder v5: Track breaking public API changes (receiver refactors)

[camilamacedo86]

Context

Kubebuilder v5 allows breaking changes. This issue tracks all required public API changes related to
value → pointer receiver refactors and any associated cleanups needed for v5.

This consolidates multiple related issues into a single tracker.

Included changes

• plugin.Version receiver refactor (value → pointer)
• CLI-related receiver method refactors (value → pointer)

Work to be done

• Land all receiver refactors targeting v5 only
• Ensure no mixed value/pointer receiver inconsistencies remain
• Update in-tree callers
• Document breaking changes and migration notes for v5

Supersedes

• Defer plugin.Version pointer receiver change to v5 #4761
• Defer CLI receiver methods refactor to v5 #4762

[ansh-devs]

Hi @camilamacedo86 have you started working on this ??

[camilamacedo86]

We should not work on those.
We have no desire or need to release Kubebuilder 5x.

It is tracked for when we have the need for ( in 2/3 years, maybe then we look at that)
But thank you a lot for looking at that.