✨ Add in-place updates support for machine controller

[alexander-demicev]

What this PR does / why we need it:
Part of #12291

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

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[alexander-demicev]

@sbueringer all comments addressed

[sbueringer]

I think you can go ahead and add unit test coverage

[sbueringer]

Suggested change

	return ctrl.Result{}, "", errors.Wrap(err, "failed to get registered UpdateMachine extensions")
	return ctrl.Result{}, "", err

I think the error build inside of GetAllExtensions already has enough context, this would just repeat it a bit